Aix useful commands

compress -c file.txt > file.Z Create a compressed file.

uuencode (infile) (extract-file-name) > (output file)
Converts a binary file to an ASCII file for transfer by modem or email

uudecode (encoded file)
Extracts a binary file from encoded file and calls it the extract-file-name

examples :-

uuencode maymap maymap > maymap.enc
uudecode maymap.enc

od -c /tmp Displays contents of the /tmp directory file
ls -i Lists files with their inode numbers
echo * Lists files, can be used if ls is corrupt/missing

chtz (timezone eg GMT0BST) Changes the timezone in /etc/environment file
chlang (language eg En_GB) Changes the language in /etc/environment file

ar -v -t (archive file) List contents of an archive
ar -v -x (archive file) Extracts the archive
ar -v -t /usr/lib/libC-r.a Lists contents of the libC_r.a library

find /source -print | cpio -pdm /target
Copying directories using cpio, creates /target/source directory.

dump -nTv (binary executable) Displays the contents of an executable file

dump -c Displays string information
dump -o Displays object file headers
dump -l Displays line numbers
dump -s Displays the text section

snap -ao /dev/rmt0 Create a snapshot onto tape
snap -ad (directory) Create a snapshot into a named directory other
than the default (/tmp/ibmsupt)

/usr/dt/bin/dtconfig -d Disables desktop logins
/usr/dt/bin/dtconfig -e Enables desktop logins
/var/dt/Xpid PID of the dtlogin process

--------------------------------------------------------------------------------
LICENSES / SOFTWARE INSTALLATION
--------------------------------------------------------------------------------


lslicense Displays number of current user licenses
chlicense -u (number) Changes the number of user licenses
( ftp,rexec and rsh (without -i flag) do not need an AIX user license to be
able to access the system. )


oslevel Returns operating system level

4 . 3 . 3 . 0 <--------- Preventive Maintenance Level
| | |
| | +----------------Modification
| +--------------------Release
+------------------------Version

oslevel -l 4.3.3.0 Displays all filesets that are "downlevel"

whence (program) Returns full path of program
whereis (program) Returms full path of program

what (program) Displays identifying info from the executable
like version number, when compiled.

lslpp -L all list all installed software
lslpp -L (program set name) Check if software installed
lslpp -f Lists filesets vs packages
lslpp -ha Lists installation history of filesets
lslpp -w /usr/bin/swapon Lists the fileset that the file belongs to

lppchk -c Checks file checksums against SWVPD
lppchk -l Checks symbolic links against SWVPD

instfix -ik (fix number eg IX66617) Checks id fix is installed
instfix -ik 4330-02_AIX_ML
instfix -i | grep ML Displays all ML's installed

instfix -k IX38794 -d /dev/cd0 Installs a fix from cdrom

/usr/sbin/install_assist Smitty Installation Assistant

/usr/sys/inst.images/sys.bundles Software bundle files

alt_disk_install -c hdisk1 Clones a running rootvg onto hdisk1
alt_disk_install -w Wakes up alt vg
alt_disk_install -s Sends alt vg to sleep !
alt_disk_install -x Removes alt vg from disk

/usr/lpp/bosinst/blvset -d /dev/hdisk0 -p 4.2
Resets the pad string in the BLV to the correct AIX version. Needed if the
migration option is missing when installing.

installp -ad (device) (fileset) (level) Install apply and commit fileset
installp -pad (device) (fileset) (level) Preview install
installp -u (fileset) Remove fileset
installp -ld (device) List all software on device

example:-

installp -pad /dev/rmt0 X11.base 4.3.3.0

installp -C Cleans up after a premature cancel or interrupted installation.

--------------------------------------------------------------------------------
TERMINALS / DISPLAYS
--------------------------------------------------------------------------------

/usr/share/lib/terminfo Directory with all support terminal info files.

tty Displays what the tty/pty number of the terminal is.

termdef reports the termtype setup in smit for the tty port
that termdef is run on.

chdev -l (device eg tty1) -a term=vt100 Sets tty to a vt100 terminal type

penable tty0 adds getty line into /etc/inittab for tty0 and starts getty
pdisable tty0 disables the getty line and disables getty

penable / pdisable -a option is for all

stty erase ^? Set backspace key for vt100 terminals
stty erase ^H Set backspace key for wyse50 terminals

lscons Displays the console device
chcons -a login=enable (device eg /dev/tty1) Changes the console device

lsdisp Display adapter device information
chdisp Change default display used by LFT subsystem


Create ttys on ports 0 to 7 on adapter sa2 :-

for i in 0 1 2 3 4 5 6 7
do
mkdev -c tty1 -t tty -s rs232 -p sa2 -w$i -a login=enable -a term=vt100
done

portmir -t /dev/tty0 Mirror current terminal onto /dev/tty0
portmir -o Turns off port mirroring


--------------------------------------------------------------------------------
NETWORK
--------------------------------------------------------------------------------

host (ip or hostname) Resolves a hostname / ip address

hostname Displays hostname
hostname (hostname) Sets the hostname until next reboot

lsdev -Cc if Lists all available/defined network interfaces

chdev -l (device name) -a hostname=(hostname) Changes hostname permanently
chdev -l inet0 -a hostname=thomas

ifconfig (device name) Displays network card settings
ifconfig (device name) up Turns on network card
chdev -l (device name) -a state=up Turns on network card
ifconfig (device name) down Turns off network card
ifconfig (device name) detach Removes the network card from the
network interface list
ifconfig en0 inet 194.35.52.1 netmask 255.255.255.0 up

ifconfig lo0 alias 195.60.60.1 Create alias ip address for loopback

route (add/delete) (-net/-host) (destination) (gateway)
Adds or deletes routes to other networks or hosts, does not update
the ODM database and will be lost at reboot.
route add -net 194.60.89.0 194.60.90.4

chdev -l inet0 -a "net,-hopcount,1,-netmask,255.255.255.0,207.156.168.0,10.0.15.254"
(destination) ( gateway )
Adds route and adds entry into ODM, route survives a reboot,

route -rn Display route table
odmget -q "attribute=route" CuAt Displays routes in the ODM.

lsattr -EHl inet0 Displays routes set in ODM and hostname
odmget -q "name=inet0" CuAt Displays routes set in ODM and hostname

refresh -s inetd Refresh inetd after changes to inetd.conf
kill -1 (inetd PID) Refresh inetd after changes to inted.conf

netstat -i Displays interface statistics
entstat -d (ethernet adapter eg en0) Displays ethernet statistics

arp -a Displays ip to mac address table from arp cache

no -a Displays network options use -o to set individual options or
-d to set individual options to default.
no -o option=value (this value is reset at reboot)
no -o "ipforwarding=1"

traceroute (name or ipaddress) Displays all the hops from source to
destination supplied.

ping -R (hostname or ipaddress) Same as traceroute except repeats.
spray (hostname or ipaddress) Send a stream of packets to a host

stopsrc -g tcpip Stops all running TCP/IP daemons
/etc/tcp.clean Stops all running TCP/IP daemons and removes all
lock files
/etc/rc.tcpip Start all TCP/IP daemons.
Do not use startsrc -g tcpip as this will start all
TCP/IP daemons including routed & gated
--------------------------------------------------------------------------------
N.F.S.
--------------------------------------------------------------------------------

exportfs Lists all exported filesystems

exportfs -a Exports all fs's in /etc/exports file

exportfs -u (filesystem) Un-exports a filesystem

mknfs Configures and starts NFS services

rmnfs Stops and un-configures NFS services

mknfsexp -d /directory Creates an NFS export directory

mknfsmnt Creates an NFS mount directory

mount hostname:/filesystem /mount-point Mount an NFS filesystem

nfso -a Display NFS Options
nfso -o option=value Set an NFS Option
nfso -o nfs_use_reserved_port=1

--------------------------------------------------------------------------------
BACKUPS
--------------------------------------------------------------------------------

MKSYSB
------

mkszfile -f Creates /image.data file (4.x onwards)
mkszfile -X Creates /fs.size file (3.x)

mksysb -i (device of file) Creates a mksysb image

mksysb does not save any raw data and will not backup a filesystem that
is not mounted.

SAVEVG
------

savevg -if (device or file) (vg) Creates a savevg image

restvg -q -f (device or file) Restore from a savevg image
Ensure that the restvg command is run from /

mkvgdata (vg) Creates new vgname.data file

CPIO ARCHIVE
------------

find (filesystem) -print | cpio -ocv > (filename or device)

eg find ./usr/ -print | cpio -ocv > /dev/rmt0

CPIO RESTORE
------------

cpio -ict < (filename or device) | more Lists archive
cpio -icdv < (filename or device)
cpio -icdv < (filename or device) ("files or directories to restore")

eg cpio -icdv < /dev/rmt0 "tcpip/*" Restore directory and contents
cpio -icdv < /dev/rmt0 "*resolve.conf" Restore a named file

TAR ARCHIVE
-----------

tar -cvf (filename or device) ("files or directories to archive")

eg tar -cvf /dev/rmt0 "/usr/*"

TAR RESTORE
-----------

tar -tvf (filename or device) Lists archive

tar -xvf (filename or device) Restore all
tar -xvf (filename or device) ("files or directories to restore")
use -p option for restoring with orginal permissions

eg tar -xvf /dev/rmt0 "tcpip" Restore directory and contents
tar -xvf /dev/rmt0 "tcpip/resolve.conf" Restore a named file

AIX ARCHIVE
-----------

find (filesystem) -print | backup -iqvf (filename or device)
Backup by filename.

eg find /usr/ -print | backup -iqvf /dev/rmt0

backup -(backup level 0 to 9) -f (filename or device) ("filesystem")
Backup by inode.

eg backup -0 -f /dev/rmt0 "/usr" -u option updates /etc/dumpdates file

AIX RESTORE
-----------

restore -qTvf (filename or device) Lists archive

restore -qvxf (filename or device) Restores all
restore -qvxf (filename or device) ("files or directories to restore")
(use -d for restore directories)

restore -qvxf /dev/rmt0.1 "./etc/passwd" Restore /etc/passwd file

restore -s4 -qTvf /dev/rmt0.1 Lists contents of a mksysb tape


BACKUPS ACROSS A NETWORK
------------------------

To run the backup on a local machine (cpio) and backup on the remote
machine's (remhost) tape drive (/dev/rmt0)

find /data -print | cpio -ocv | dd obs=32k | rsh remhost \
"dd ibs=32k obs=64k of=/dev/rmt0"

To restore/read the backup (cpio) on the remote machine

dd ibs=64k if=/dev/rmt0 | cpio -icvt

To restore/read the backup (cpio) on the local machine from the remote
machine's (remhost) tape drive (/dev/rmt0)

rsh remhost "dd ibs=64k obs=32k if=/dev/rmt0" | dd ibs=32k | cpio -icvt

To run the backup (cpio) on a remote machine (remhost) and backup to
the local machines tape drive (/dev/rmt0)

rsh remhost "find /data -print | cpio -ocv | dd ibs=32k" | dd ibs=32k obs=64k of=/dev/rmt0

tar cBf - . | rsh remhost "dd ibs=512 obs=512 of=/dev/rmt0"
Same as above but using tar instead of cpio.

--------------------------------------------------------------------------------
Copying diskettes and tape
--------------------------------------------------------------------------------

COPYING DISKETTES
-----------------

dd if=/dev/fd0 of=(filename) bs=36b
dd if=(filename) of=/dev/fd0 bs=36b conv=sync or flcopy


COPYING TAPES
-------------

dd if=/dev/rmt0 of=(filename)
dd if=(filename) of=/dev/rmt0 or tcopy

--------------------------------------------------------------------------------
VI Commands
--------------------------------------------------------------------------------

:g/xxx/s//yyy/ global change where xxx is to be changed by yyy

sed 's(ctrl v ctrl m)g//g' old.filename > new.filename
Strips out ^M characters from ascii files that have been transferred as binary.
To enter crontrol characters type ctrl v then ctrl ? where ? is whatever
ctrl character you need.

--------------------------------------------------------------------------------
DEVICES
--------------------------------------------------------------------------------

lscfg lists all installed devices
lscfg -v lists all installed devices in detail
lscfg -vl (device name) lists device details

bootinfo -b reports last device the system booted from
bootinfo -k reports keyswitch position
1=secure, 2=service, 3=normal

bootinfo -r reports amount of memory (/ by 1024)
bootinfo -s (disk device) reports size of disk drive
bootinfo -T reports type of machine
ie rspc,rs6ksmp,rspc or chrp

lsattr -El sys0 -a realmem reports amount of useable memory

mknod (device) c (major no) (minor no) Creates a /dev/ device file.
mknod /dev/null1 c 2 3

lsdev -C lists all customised devices ie installed
lsdev -P lists all pre-defined devices ie supported
lsdev -(C or P) -c (class) -t (type) -s (subtype)

chdev -l (device) -a (attribute)=(new value) Change a device attribute
chdev -l sys0 -a maxuproc=80

lsattr -EH -l (device) -D Lists the defaults in the pre-defined db
lsattr -EH -l sys0 -a modelname

rmdev -l (device) Change device state from available to defined
rmdev -l (device) -d Delete the device
rmdev -l (device) -SR S stops device, R unconfigures child devices

lsresource -l (device) Displays bus resource attributes of a device.

cfgmgr Configures devices
cfgmgr -i /dev/cd0 Configure devices and install drivers from /dev/cd0
if required
cfgmgr -S Run in serial, used with a larger number of disks
cfgmgr -l scsi0 Configure devices on adapter scsi0 only

diag Run hardware diagnostic menu
smitty diag Run hardware diagnostic menu
( 7020-40P and 7248-43P machines cannot run diagnostics, use diagnostics
in the SMS menus instead )

diag -d (device) Run diagnostics against a device.

lsslot Displays all hot swap slots
lsslot -c pci Lists all pci hot swap slots
lsslot -c pci -a Lists all available pci hot swap slots

drslot Reconfgiures PCI hot-plug slots
drslot -i -c pci -s U0.1-P1-I3 Display a slot, flashes the LED next to
the slot so that it can be identified.

Power Management (PCI machines)
-------------------------------

pmctrl -a Displays the Power Management state

rmdev -l pmc0 Unconfigure Power Management
mkdev -l pmc0 Configure Power Management

--------------------------------------------------------------------------------
TAPE DRIVES
--------------------------------------------------------------------------------

rmt0.x where x = A + B + C

A = density 0 = high 4 = low
B = retension 0 = no 2 = yes
C = rewind 0 = yes 1 = no

tctl -f (tape device) fsf (No) Skips forward (No) tape markers
tctl -f (tape device) bsf (No) Skips back (No) tape markers
tctl -f (tape device) rewind Rewind the tape
tctl -f (tape device) offline Eject the tape
tctl -f (tape device) status Show status of tape drive

chdev -l rmt0 -a block_size=512 changes block size to 512 bytes
(4mm = 1024, 8mm = variable but
1024 recommended)
dd if=/dev/rmt0 bs=128k count=1 | wc -c
Displays the block size of an unknow tape. Set block size to 0 first.

bootinfo -e answer of 1 = machine can boot from a tape drive
answer of 0 = machine CANNOT boot from tape drive

diag -c -d (tape device) Hardware reset a tape drive.
diag -c -d rmt0

tapechk (No of files) Checks Number of files on tape.

< /dev/rmt0 Rewinds the tape !!!


--------------------------------------------------------------------------------
PRINTERS / PRINT QUEUES
--------------------------------------------------------------------------------

splp (device) Displays/changes printer driver settings
splp /dev/lp0

export $LPDEST="pqname" Set default printer queue for login session

lsvirprt Lists/changes virtual printer attributes.

lsallq Displays all queues

rmvirprt -q queuename -d queuedevice Removes a virtual printer

qpri -#(job No) -a(new priority) Change a queue job priority.

qhld -#(job No) Put a hold on hold
qhld -r #(job No) Release a held job

qchk -A Status of jobs in queues
lpstat
lpstat -p(queue) Status of jobs in a named queue

qcan -x (job No) Cancel a job from a queue
cancel (job No)

enq -U -P(queue) Enable a queue
enable (queue)

enq -D -P(queue) Disable a queue
disable (queue)

qmov -m(new queue) -#(job No) Move a job to another queue

startsrc -s qdaemon Start qdaemon sub-system
lssrc -s qdaemon List status of qdaemon sub-system
stop -s qdaemon Stop qdaemon sub-system


--------------------------------------------------------------------------------
FILE SYSTEMS
--------------------------------------------------------------------------------

Physical Volumes (PV's)
-----------------------

lspv Lists all physical volumes (hard disks)
lspv (pv) Lists the physical volume details
lspv -l (pv) Lists the logical volumes on the physical volume
lspv -p (pv) Lists the physical partition usage for that PV
lspv -M (pv) Lists the PP allocation table for that PV.

If the PV state is "missing" but the disk is okay, use "varyonvg vg" to change
the state of the PV to "active".

chdev -l (pv) -a pv=yes Makes a new hdisk a pysical volume.

chpv -v r (pv) Removes a disk from the system.
chpv -v a (pv) Adds the removed disk back into the system.
chpv -a y (pv) Changes pv allocatable state to YES
chpv -a n (pv) Changes pv allocatable state to NO

migratepv (old pv) (new pv) Moves all LV's from one PV to another PV, both
PV's must be in the same volume group.

Migratepv cannot migrate striped logical volumes, use cplv and rmlv.

replacepv (old pv) (new pv) (4.3.3 onwards)


Volume Groups (VG's)
--------------------

lsvg Lists all volume groups
lsvg (vg) Lists the volume group details
lsvg -l (vg) Lists all logical volumes in the volume group
lsvg -p (vg) Lists all physical volumes in the volume group
lsvg -o Lists all varied on volume groups

varyonvg (vg) Vary On a volume group
varyonvg -f (vg) Forces the varyon process
varyonvg -s (vg) Vary on a VG in maintenance mode. LV commands can be
used on VG, but LV,s cannot be opened for I/O.
varyoffvg (vg) Vary Off a volume group

synclvodm (vg) Tries to resync VGDA, LV control blocks and ODM.
synclvodm -v (vg) Rebuilds the LVCB.
(the vg needs to be varied on before running synclvodm)


mkvg -y(vg) -s(PP size) (pv) Create a volume group
mkvg -y datavg -s 4 hdisk1

reducevg (vg) (pv) Removes a volume group
reducevg -d (vg) (pv) Removes a volume group and delete all LV's on the PV
reducevg (vg) (PVID) Removes the PVID disk reference from the VGDA when a
disk has vanished without the reducevg (vg) (pv)
command being run first.
reducevg -df (vg) (pv) Deletes all LV's from the VG and removes the VG
from the disk. If the last disk in the VG then
the VG is deleted.

extendvg (vg) (new pv) Adds another PV into a VG.

exportvg (vg) Exports the volume group, removes the VG entries and
removes all FS entries from /etc/filesystems but
leaves the mount points.

Note : Cannot export a VG if it has active paging space, turn off paging,
reboot before exporting VG. Exporting removes entries from filesystems
file but does not remove the mount points.

chvg -a y (vg) Auto Vary On a volume group at system start.
chvg -u (vg) Unlocks a locked volume group.

lqueryvg -Atp (pv) Details volume group info for the hard disk.

importvg -y (vg name) (pv) Import a volume group from a disk.
importvg (pv) Same as above but VG will be called vg00 etc.

4.3 onwards, importvg will automatically varyon the VG.

chvg -Q (y/n) (vg name) Turns on/off Quorum checking on a VG.

reorgvg (vg) (lv) Reorganised a fragmented LV, must state an LV at the
command line else the first LV in the VG is picked.
Does not reorg the PP's of striped LV's.



Logical Volumes (LV's)
----------------------

lslv (lv) Lists the logical volume details
lslv -l (lv) Lists the physical volume which the LV is on
lsattr -EHl (lv) Displays more logical volume details

mklv (vg) (No of PP's) (pv Name optional) Create a logical volume
mklv -y (lv) (PP's) (pv name optional) Creates a named logical volume
( use -t jfs2 when creating an LV for a JFS2 filesystem )


chlv -n (new lv) (old lv) Rename a logical volume
chlv -x (number) (lv) Change max no of PP's
chlv -s n (lv) Turns of strickness on the LV
extendlv (lv) (extra No of PP's) Increase the size of an LV
rmlv (lv) Remove a logical volume

cplv -v (vg to copy to) -y (new lv) (lv) Copy an LV to a new LV

If copying a filesystem LV, umount the filesystem before copying, otherwise you
will have to fsck the the new LV before the filesystem can be mounted.
If copying a striped LV to an LV that is already created, and the stripe
size is different ( or not even striped ), then these new parameters are
maintained when the data is copied to the new LV.

cplv -e (new lv) (old lv) Copy to an existing LV
( new lv must have type as copy use chlv -t copy (new lv) to change )

mklv/extendlv -a = PP alocation policy
-am = middle -ac = center -ae = edge
-aie = inner edge -aim = inner middle

migratepv -l (lv) (old pv) (new pv)
Move a logical volume between physical volumes. Both physical volumes
must be in the same volume group !

mklv -y (lv) -t jfslog (vg) (No of PP's) (pv Name optional)
Creates a JFSlog logical volume.

logform (/dev/lv) Initialises an LV for use as an JFSlog

getlvcb -AT (lv) Displays Logical Volume Control Block information

File Systems (FS's)
-------------------

lsfs Lists all filesystems
lsfs -q (fs) Lists the file system details
lsjfs Displays data about all filesystems in CSV style format

mount Lists all the mounted filesystems
mount (fs or lv) Mounts a named filesystem
mount -a Mounts all filesystems
mount all

mount -r -v cdrfs /dev/cd0 /cdrom mounts cd0 drive over /cdrom

crfs -v jfs -d(lv) -m(mount point) -A yes
Will create a file system on the whole of the logical volume, adds entry into
/etc/filesystems and will create mount point directory if it does not exist.
( use -v jfs2 for JFS2 filesystems )

crfs -v jfs -g(vg) -m(mount point) -a size=(size of fs) -A yes
Will create a logical volume on the volume group and create the file system on
the logical volume. All at the size stated. Will add entry into
/etc/filesystems and will create the mount point directory if it does not exist.

Use attribute "-a log=/dev/log01" to specify a jfslog devices
Use attrubute "-a bf=true" for a large file enabled filesystem

chfs -A yes (fs) Change file system to Auto mount in
/etc/filesystems
chfs -a size=(new fs size)(fs) Change file system size
chfs -m (new-mount-point) (fs) Change the file system mount point.

rmfs (fs) Removes the file system and will also remove the
LV if there are no onther file systems on it.

defrag -q (fs) Reports the fragment status of the file system.
defragfs -r (fs) Runs in report only defrag mode (no action).
defragfs (fs) Defragments a file system.

fsck (fs) Verify a file system, the file system must be unmounted!
fsck (-y or -n) (fs) Pre-answer questions either yes or no !
fsck -p (fs) Will restore primary superblock from backup copy if the
superblock is corrupt.
( or dd count=1 bs=4k skip=31 seek=1 if=/dev/lv00 of=/dev/lv00 )

Mirroring
---------

mklv -y (lv) -c(copies 2 or 3) (vg) (No of PP's) (PV Name optional)
Creates a mirrored named logical volume.

mklvcopy -s n (lv) (copies 2 or 3) (pv)
Creates a copy of a logical volume onto another physical volume. The physical
volume MUST be in the same volume group as the orginal logical volume !

rmlvcopy (lv) (copies 1 or 2) Removes logical volume copies.
rmlvcopy (lv) (copies 1 or 2) (pv) From this pv only!

syncvg -p (pv) Synchronize logical partion copies
syncvg -l (lv)
syncvg -v (vg)

mirrorvg (vg) (pv)
Mirrors the all the logical volumes in a volume group onto a new physical
volume. New physical volume must already be part of the volume group.

chfs -a splitcopy=/backup -a copy=2 /data1
Splits off a copy of a 3 way mirror and mount read only for use as an
offline backup.

--------------------------------------------------------------------------------
BOOT LOGICAL VOLUME (BLV) / PROCESSORS / KERNEL
--------------------------------------------------------------------------------

Mirroring does not work with the BLV as it is not a true logical volume,
bosboot must be run against the other disk after mirroring the rootvg.

bootlist -m (normal or service) -o displays bootlist
bootlist -m (normal or service) (list of devices) change bootlist

bootinfo -b Identifies the bootable disk
bootinfo -t Specifies type of boot

bosboot -a -d (/dev/pv) Creates a complete boot image on a physical volume.

mkboot -c -d (/dev/pv) Zero's out the boot records on the physical volume.

savebase -d (/dev/pv) Saves customised ODM info onto the boot device.

lslv -m hd5 Find out which disk the BLV is on.

bootinfo -y Displays which kernel can be used, 32 or 64 bit

genkex Reports all loaded kernel extensions.

lsdev -Cc processor Lists all processors
lsattr -EHl proc0 Displays attributes of processor 0. AIX 5.1L will
display processor clock frequency.

--------------------------------------------------------------------------------
SYSTEM DUMP
--------------------------------------------------------------------------------

1, AIX 4.2.1 and greater supports system dump to paging space.
2, AIX 4.3.3 and greater supports system dump to mirrored paging space.
3, Primary dump device must be in the rootvg
4, Secondary dump device can be outside rootvg unless it is a paging device.

sysdumpdev -l Lists current dump destination.
sysdumpdev -e Estimates dumpsize of the current system in bytes.
sysdumpdev -L Displays information about the previous dump.

sysdumpstart -p Starts a dump and writes to the primary dump device.
sysdumpstart -s Starts a dump and writes to the secondary dump device.

(MCA machine can also dump if key is in service position and the reset
button is pressed)

sysdumpdev -p (dump device) -P Sets the default dump device, permanently

Analyse dump file :-
echo "stat\n status\n t -m" | crash /var/adm/ras/vmcore.0

snap -gfkD -o /dev/rmt0 Copy dump to tape to send to IBM support, uses tar.

--------------------------------------------------------------------------------
PAGING SPACE (PS's)
--------------------------------------------------------------------------------

lsps -a Lists out all paging space
lsps -s Displays total paging and total useage
lsps (ps)

swappon /dev/ps Activates a paging device eg /dev/paging00
swappoff /dev/ps Deactivates a paging device ( AIX 5.x only )

mkps -s(No of PP's) -n -a (vg)
mkps -s(No of PP's) -n -a (vg) (pv)
-n = don't activate/swapon now -a = activate/swapon at reboot

mklv -b n -t paging -y hd6 (vg) (No of PP's) (pv)
Creates paging space using the mklv command.

chps -a n (ps) Turns off paging space.
chps -s(No of PP's) (ps) Increases paging space.
chps -d(No of PP's) (ps) Decreases paging space ( AIX 5.x only )

chlv -n (new name) (old name) Change paging space name

rmps (ps) Remove paging space. PS must have been turned off
and then the system rebooted before it can be removed.

Note : Need to change the swapon entry in /sbin/rc.boot script if you are
changing the default paging space from /dev/hd6. You also need to
do a "bosboot -a -d /dev/hdiskx" before the reboot.

/etc/swapspaces File that lists all paging space devices that are
activated/swapon during reboot.

--------------------------------------------------------------------------------
SCHEDULING
--------------------------------------------------------------------------------

crontab -l List out crontab entrys
crontab -e Edit crontab entrys
crontab -l > (filename) Output crontab entrys to a file
crontab (filename) Enter a crontab from a file
crontab -r Removes all crontab entrys
crontab -v Displays crontab submission time.

/var/adm/cron/cron.allow File containing users allowed crontab use.
/var/adm/cron/cron.deny File containing users denied crontab use.
/var/adm/cron/crontab Directory containing users crontab entries.
/var/adm/cron/log Cron log file.

at (now + 2 minutes, 13:05, etc) {return} Schedule a job using at
Command or schell script {return}
{CTRL D}

echo "shutdown -Fr" | at now + 1 minute

at -l
atq Lists out jobs scheduled to run via at command

at -r (at job No)
atrm (at job No) Removes an at job scheduled to run.

/var/adm/cron/at.allow File containing users allowed at use.
/var/adm/cron/at.deny File containing users denied at use.
/var/adm/cron/atjobs Directory containing users at entries.

--------------------------------------------------------------------------------
SECURITY
--------------------------------------------------------------------------------

nulladm /var/adm/wtmp To recreate/clear down the wtmp file.

groups Lists out the groups that the user is a member of
setgroups Shows user and process groups

chmod abcd (filename) Changes files/directory permissions

Where a is (4 SUID) + (2 SGID) + (1 SVTX)
b is (4 read) + (2 write) + (1 execute) permissions for owner
c is (4 read) + (2 write) + (1 execute) permissions for group
d is (4 read) + (2 write) + (1 execute) permissions for others


-rwxrwxrwx -rwxrwxrwx -rwxrwxrwx
||| ||| |||
- - -
| | |
Owner Group Others

-rwSrwxrwx = SUID -rwxrwSrwx = SGID drwxrwxrwt = SVTX


chown (new owner) (filename) Changes file/directory owners
chgrp (new group) (filename) Changes file/directory groups

chown (new owner).(new group) (filename) Do both !!!

umask Displays umask settings
umask abc Changes users umask settings

where ( 7 - a = new file read permissions)
( 7 - b = new file write permissions)
( 7 - c = new file execute permissions)

eg umask 022 = new file permissions of 755 = read write and execute for owner
read ----- and execute for group
read ----- and execute for other

mrgpwd > file.txt Creates a standard password file in file.txt

passwd Change current user password

pwdadm (username) Change a users password

pwdck -t ALL Verifies the correctness of local authentication

lsgroup ALL Lists all groups on the system
mkgroup (new group) Creates a group
chgroup (attribute) (group) Change a group attribute
rmgroup (group) Removes a group

--------------------------------------------------------------------------------
USERS / ENVIRONMENT
--------------------------------------------------------------------------------

passwd -f Change current users gecos (user description)
passwd -s Change current users shell

chfn (username) Changes users gecos
chsh (username) (shell) Changes users shell

env Displays values of environment variables
printenv

id Displays current user's uid and gid details
id (user) Displays user uid and gid details

whoami Displays current user details
who am i (or who -m)

who Displays details of all users currently logged in.
w
who -b Displays system reboot time

uptime Displays number of users logged in, time since last
reboot, and the machine load averages.

lsuser ALL Lists all users details
lsuser (username) Lists details for user
lsuser -a(attribute) (username or ALL) Lists user attributes
lsuser -a home ALL

mkuser -a(attributes) (newuser) Add a new user

chuser (attributes) (user) Change a user
chuser login=false (user) Lock a user account

rmuser -p (user) Removes a user and all entries in security files

usrck -t ALL Checks all the user entires are okay.

fuser -u (logical volume) Displays processes using the files in that LV
fuser -k /dev/lv02 Will send a kill signal to all processes using
/dev/lv02

lsattr -D -l sys0 -a maxuproc Displays max number of processes per user
chdev -l sys0 -a maxuproc=(number) Changes max number of processes per user

chlang (language) Changes the language settings for system or user.
En_GB = PC850 code pages
en_GB = ISO8859 code pages (Great Britain)
C = posix

su - (user) Switch to new user and change to the new users environment.
su (user) Switch to new user, current environment is propated to the
new shell.

--------------------------------------------------------------------------------
REMOTE USERS
--------------------------------------------------------------------------------

ruser -a -f (user) Adds entry into /etc/ftpusers file
ruser -a -p (host) Adds entry into /etc/host.lpd file
ruser -a -r (host) Adds entry into /etc/hosts.equiv file

ruser -d -f (user) Deletes entry in /etc/ftpusers file
ruser -d -p (host) Deletes entry in /etc/host.lpd file
ruser -d -r (host) Deletes entry in /etc/hosts.equiv file

ruser -s -F Shows all entries in /etc/ftpusers file
ruser -s -P Shows all entries in /etc/host.lpd file
ruser -s -R Shows all entries in /etc/hosts.equiv file

ruser -X -F Deletes all entries in /etc/ftpusers file
ruser -X -P Deletes all entries in /etc/host.lpd file
ruser -X -R Deletes all entries in /etc/hosts.equiv file

--------------------------------------------------------------------------------
INITTAB
--------------------------------------------------------------------------------

telinit S Switches to single user mode.
telinit 2 Switches to multi user mode.
telinit q Re-examines /etc/inittab

lsitab -a Lists all entries in inittab
lsitab (ident eg tty1) Lists the tty1 entry in inittab

mkitab ("details") Creates a new inittab entry
chitab ("details") Ammends an existing inittab entry

rmitab (ident eg tty1) Removes an inittab entry.

chitab "tty1:2:respawn:/usr/bin/getty /dev/tty1"

--------------------------------------------------------------------------------
ODM
--------------------------------------------------------------------------------

odmget -q "name=lp1" CuDv |more Gets lp1 info from pre-defined database.

odmget -q "name-lp1" CuAt |more Gets lp1 info from customised database.

odmdelete -o CuAt -q "name=lp1" Deletes lp1 info from customised db.

odmget -q "name=lp1" CuAt > lp1.CuAt Export ODM info to text file.
odmadd lp1.CuAt Import ODM info from text file.

odmshow CuAt Displays fields and record structures of CuAt

odmchange
odmdrop

--------------------------------------------------------------------------------
ERROR LOGGING / LOGS
--------------------------------------------------------------------------------

/usr/lib/errdemon -l Displays errorlog attributes.
/usr/lib/errdemon Starts error logging.
/usr/lib/errstop Stops error logging.

errpt Displays summary errorlog report.
errpt -a Displays detailed errorlog report.
errpt -j (identifier) Displays singe errorlog report.

Note : errorlog classes are H=Hardware S=Software O=Information V=Undetermined

errclear (days) Deletes all error classes in the errorlog.
errclear -d (class) (days) Deletes all error class entries in errlog.

Note : The errclear command will delete all entries older than the numbers of
days specified in the days paramenter. To delete ALL entries used 0.

errlogger "message up to 230 chrs"
Enters an operator notifaction message into the errorlog.

alog -L Lists all logs define in the alog db

alog -o -t (type) Display contents of log (type)
alog -o -t boot

cat /tmp/boot.log | alot -q -t (type) Copies contects of a file to a log

--------------------------------------------------------------------------------
PERFORMANCE MONITORING / TUNING
--------------------------------------------------------------------------------

vmstat (drive) (interval) (count) Reports virtual memory statistics.
vmstat hdisk0 5 20

vmstat -s Diplays number of paging events since system start.
vmstat -f Diplays number of forks since system start.
vmstat -i Diplays number of interupts by device since system start.

iostat (drive) (interval) (count) Reports i/o and cpu statistics.
iostat hdisk0 5 20

iostat -d (drive) (interval) (count) Limits report to drive statistics.
iostat -t (interval) (count) Limits report to tty statistics.

sar -u -P ALL 10 10 Displays %usr %sys %wio %idle for all processors

/usr/samples/kernel/vmtune Displays "Virtual Memory Manager" settings

--------------------------------------------------------------------------------
DOS DISKETTES
--------------------------------------------------------------------------------

dosdir Reads directory listing of a diskette
dosdir (directory) Reads directory listing of a named directory

dosread -D/dev/fd0 C41.TXT c41.txt Gets C41.TXT from diskette drive fd0

dosread -D/dev/fd0 DIRECTORY/C41.TXT c41.txt
(-D option can be dropped if using fd0)

doswrite -D/dev/fd0 (unixfile) (dosfile) Writes a file to diskette

dosdel (dosfile) Deletes a dos file on diskette

dosformat Formats the diskette

--------------------------------------------------------------------------------
SENDMAIL
--------------------------------------------------------------------------------

sendmail -bi Creates new aliase db from /etc/aliase file.
newaliases

sendmail -bp Displays the contents of the mail queue
mailq

sendmail -q Processe the sendmail queue NOW

sendmail -bt -d0.4 < /dev/null
Prints out sendmail version, compile defines and system information

refresh -s sendmail Restart sendmail, will re-read /etc/sendmail.cf
kill -l (sendmail PID)

stopsrc -s sendmail Stops the sendmail daemon
startsrc -s sendmail "-bd -q30" Starts the sendmail daemon