Use info from file to use in bash script

[proggybilly]

I have a script that creates a tbz file as a "backup" of some system directories on a linux server and then rsync's that to another server, the code looks like this:

#!/bin/sh
/usr/bin/find /backup -type f -ctime +1 ! -exec rm {} \;
/usr/bin/find /var/lib/asterisk/backups -type f -ctime +7 ! -exec rm {} \;

cd /

filename="system-`date +'%Y%m%d%H%M'`.tbz2"
filenm1="/backup/$filename"

START=`date +%s`
START1=`date  +"%Y-%m-%d %H:%M:%S"`

tar -jcf $filenm1 -X /etc/backup.exclude ./usr/lbin ./etc ./var

FILESBACK=`grep -c "/" $filenm1`
FILESIZE=`du -shm $filenm1`

RSYNC_PASSWORD=Asbak12
export RSYNC_PASSWORD

cd /backup
/usr/bin/rsync -r -p --force $filename astback@dis::astback

I want to pull config information from another file, the file info looks like this:
172.16.254.3
255.255.255.0
172.16.254.1
172.16.254.105
197
198
196
M
172.16.254.20
phonesync
12345
phonesync
on

I need to first check if the last line equals on, then I need to pull data from the file, the info I need is from below the M to the end so that my code will now look like this:

#!/bin/sh
/usr/bin/find /backup -type f -ctime +1 ! -exec rm {} \;
/usr/bin/find /var/lib/asterisk/backups -type f -ctime +7 ! -exec rm {} \;

cd /

filename="system-`date +'%Y%m%d%H%M'`.tbz2"
filenm1="/backup/$filename"

START=`date +%s`
START1=`date  +"%Y-%m-%d %H:%M:%S"`

tar -jcf $filenm1 -X /etc/backup.exclude ./usr/lbin ./etc ./var

FILESBACK=`grep -c "/" $filenm1`
FILESIZE=`du -shm $filenm1`

RSYNC_PASSWORD=[b]12345[/b]
export RSYNC_PASSWORD

cd /backup
/usr/bin/rsync -r -p --force $filename [b]phonesync[/b]@[b]172.16.254.20[/b]::[b]phonesync[/b]

I bolded the changes that would come from the config file.

I need to know how to pull that data into an array and get the total number of elements so i can do something similar to

if !$ARRAY[$i] == on then exit else continue

then I need the specific items starting at the last element and working backwards to populate into the areas you see in bold.

Please, can anyone help. I am a severe newb at bash scripting.

 

[Annihilannic]

Can you be confident that none of those last 5 lines will be empty, and that each is a single word? If so, this should work:

# assign rest of command line to positional parameters $1, $2, $3, etc.
set -- $(tail -5 configfile)

if [[ "$5" == "on" ]]
then
        exit
else
        cd /backup
        /usr/bin/rsync -r -p --force $filename $2@$1::$4
fi

If not, we'll need to come up with something a little smarter.

Annihilannic.

 

[proggybilly]

Yes I can guarantee that the file will be as I described. It is populated from a web form that I created. I will give your example a shot today. Thanks!

 

[proggybilly]

Worked like a charm! Now to work out the kinks. Trying to rsync from linux to windows so there are many firewall issues to work out.