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How to get the PID
- Thread starter crystal28
- Start date
Well, two things:
First, you can't get the process id of a process that's complete, as it goes away.
Second, ps is a command that given the right flags returns more than just a single number - it returns a lot of data. You have to parse it to get the specific numbers you want.
Try running "ps" from your command line, and depending on your flavor of unix, "ps -ef" or "ps -aux" for more output.
First, you can't get the process id of a process that's complete, as it goes away.
Second, ps is a command that given the right flags returns more than just a single number - it returns a lot of data. You have to parse it to get the specific numbers you want.
Try running "ps" from your command line, and depending on your flavor of unix, "ps -ef" or "ps -aux" for more output.
- Thread starter
- #3
Thanks for the tip.I am running c shell and in that i am getting the pid in a varible x thru the below statements
foreach x (`ps -o ppid | cut -c2-8`)
inside this loop i want to skip the first word of the string that x has i.e PPID is not i want as i want to kill the processes..Please let me know how to do this.
end
foreach x (`ps -o ppid | cut -c2-8`)
inside this loop i want to skip the first word of the string that x has i.e PPID is not i want as i want to kill the processes..Please let me know how to do this.
end
Hi,
use $$ for your scripts pid.
set ppid = $$
set PIDS = ( ` ps -o $ppid | egrep -v PPID | cut -c2-8` )
will obtain a list of all your child processes. don't forget the parentahsis in case it returns more than 1 value.
My CSH KILLJOBS script goes like this. I let the user ( me ) Pass in a string to search processes for to kill.
I am a little paranoid about killing more than one job in any run of the script. I guess I could use ps -ef but I would have to count the column ( or maybe 2-8 is correct ).
#! /bin/csh
set PIDS = ( `ps -auxw | egrep "$1" | egrep -v egrep | cut -c10-15` )
if ( $#PIDS == 0 ) then
echo "No Processes selected to kill"
exit 5
endif
if ( $#PIDS > 1 ) then
echo "More than one process selected"
echo "Are you sure you want to kill these $#PIDS tasks?"
set a = $<
if ( "$a" != "YES#" ) then
echo "$0 aborted without killing jobs"
exit 5
endif
endif
nohup kill -9 $PIDS
#see if they died.
ps -p "$PIDS"
use $$ for your scripts pid.
set ppid = $$
set PIDS = ( ` ps -o $ppid | egrep -v PPID | cut -c2-8` )
will obtain a list of all your child processes. don't forget the parentahsis in case it returns more than 1 value.
My CSH KILLJOBS script goes like this. I let the user ( me ) Pass in a string to search processes for to kill.
I am a little paranoid about killing more than one job in any run of the script. I guess I could use ps -ef but I would have to count the column ( or maybe 2-8 is correct ).
#! /bin/csh
set PIDS = ( `ps -auxw | egrep "$1" | egrep -v egrep | cut -c10-15` )
if ( $#PIDS == 0 ) then
echo "No Processes selected to kill"
exit 5
endif
if ( $#PIDS > 1 ) then
echo "More than one process selected"
echo "Are you sure you want to kill these $#PIDS tasks?"
set a = $<
if ( "$a" != "YES#" ) then
echo "$0 aborted without killing jobs"
exit 5
endif
endif
nohup kill -9 $PIDS
#see if they died.
ps -p "$PIDS"
prouve you readed once again 'man ps' and realized:
ps -ef|grep something|grep -v grep|awk OR cut OR sed'
was perfectly correct ... 10 years ago.
(sys5) ps has better options:
NOTA: interprete ' as a back quote and Q as a space
#!/bin/sh
WHAT_YOU_WANT=xxx
WHAT_YOU_GET='/bin/ps -efocomm,pid|sed -en "s/.*$WHAT_YOU_WANT.*Q//p"'
[ x$WHAT_YOU_GET = x ] && echo $WHAT_YOU_WANT not found && exit 1
kill 0 $WHAT_YOU_GET || exit 1
kill -9 $WHAT_YOU_GET
exit 0 -----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !
ps -ef|grep something|grep -v grep|awk OR cut OR sed'
was perfectly correct ... 10 years ago.
(sys5) ps has better options:
NOTA: interprete ' as a back quote and Q as a space
#!/bin/sh
WHAT_YOU_WANT=xxx
WHAT_YOU_GET='/bin/ps -efocomm,pid|sed -en "s/.*$WHAT_YOU_WANT.*Q//p"'
[ x$WHAT_YOU_GET = x ] && echo $WHAT_YOU_WANT not found && exit 1
kill 0 $WHAT_YOU_GET || exit 1
kill -9 $WHAT_YOU_GET
exit 0 -----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !
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