Looping and Incrementing with Bourne Shell 2

[Michael42]

Thanks to this group I have the a fantastic backup script. I'd like to try to optimize it with your help.

I grep for the partitions to backup using the below:

grep "/usr1" /etc/vfstab
if [ $? -eq 0];
then <backup command> /usr1
fi

grep &quot;/usr2&quot; /etc/vfstab
if [ $? -eq 0];
then <backup command> /usr2
fi

In my environment the /usrX partitions are each an entire disk with user files or data. On some systems I may have up to 20.

How can I loop through the code and increment the &quot;X&quot; /usrX?

Thanks again for your advice all,

Michael42

 

[dickiebird]

First thoughts ( without too much !)
integer f1=1
while f1 < 21
do
ttx='/usr{$f1}'
grep $ttx /etc/vfstab
if [ $? -eq 0];
then <backup command> $ttx
fi
((f1=f1+1))
done


Dickie Bird (-)))

 

[Salem]

1. Get a list of all the usr directories in /

a=`ls -1d /usr*`

2. Iterate over that list

for i in $a;
do
  grep "$i"  /etc/vfstab
  if [ $? -eq 0];
    then <backup command> $i
  fi
done

 

[Michael42]

Salem, dickiebird,

Your snippets are better than sliced bread. Please have a star on me.

Thanks for your help,

Michael42