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ksh : multiple for wordlists

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Top Forums Shell Programming and Scripting ksh : multiple for wordlists
# 1  
Old 05-28-2013
ksh : multiple for wordlists
Hi guys

This is my first post on here and I am fairly new to ksh scripting, please be gentle!

I am trying to create a script that takes an fssnap of all slices and then .tar's them. The trouble that I am having is with the .tar element, I want it to label the .tar based on which slice it is currently tar'ing (i.e. root.tar, opt.tar, var.tar, etc).

This is what I have so far:

Code:
for slice in / /opt /var /export/home
   do
     echo "Archiving $slice"
     rootsnap=`fssnap -F ufs -o unlink,backing-store=/tmp/backup/$bckstore/root_snap $slice`
     mount -o ro $rootsnap /mnt
     tar cfpE $tarstore/root.tar /mnt          (<<<<---- I want this filename to change based on current slice)
     unount /mnt
     fssnap -d $slice
done


So the for statement cant be injected as a variable in the filename because of the characters, is there any way of adding multiple wordlists in the for statement?

Thanks

Andy
Last edited by joeyg; 05-28-2013 at 08:51 AM.. Reason: Please wrap code and data in CodeTags
# 2  
Old 05-28-2013
Quote:
Originally Posted by andy123
I am trying to create a script that takes an fssnap of all slices and then .tar's them. The trouble that I am having is with the .tar element, I want it to label the .tar based on which slice it is currently tar'ing (i.e. root.tar, opt.tar, var.tar, etc).
First off, you might want to get your wording compatible to the OS you are (now) working on: these are not "slices", but filesystems. It will help you accomodate to your environment by using the wording common to this platform. This has nothing to do with your problem, but i am sure will help in the long run.

Code:
for slice in / /opt /var /export/home
   do
     echo "Archiving $slice"
     rootsnap=`fssnap -F ufs -o unlink,backing-store=/tmp/backup/$bckstore/root_snap $slice`
     mount -o ro $rootsnap /mnt
     tar cfpE $tarstore/root.tar /mnt          (<<<<---- I want this filename to change based on current slice)
     unount /mnt
     fssnap -d $slice
done

hmm, the variables "$bckstore" and "$tarstore" are used, but nowhere defined. Further,

Code:
     rootsnap=`fssnap -F ufs -o unlink,backing-store=/tmp/backup/$bckstore/root_snap $slice`

should be written

Code:
     rootsnap=$(fssnap -F ufs -o unlink,backing-store=/tmp/backup/$bckstore/root_snap $slice)

because backticks should not be used any more. When you start to write ksh scripts, as you say, better start by developing good habits instead of bad ones.

Quote:
Originally Posted by andy123
So the for statement cant be injected as a variable in the filename because of the characters, is there any way of adding multiple wordlists in the for statement?
I am not sure what you mean by this. You have the value from the wordlist already in a variable, "$slice". What keeps you from using it like this:

Code:
     tar cfpE $tarstore/root.tar ${slice}

If your values contain whitespace (seems not to be the case in your code) you have to use quoting:

Code:
for value in a b "c d" e f ; do
     print - "${value}"
done

I hope this helps.

bakunin
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