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Re: [PLUG] Building a command from variables in BASH
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- From: Edmond Rodriguez <erodrig97.list@gmail.com>
- To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
- Subject: Re: [PLUG] Building a command from variables in BASH
- Date: Thu, 16 Sep 2010 16:26:07 -0400
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On Thu, Sep 16, 2010 at 3:54 PM, sean finney > eval cat $FILE1 $VCIDS > $FILE2
>
> though this will fail miserably if FILE1/FILE2/VCIDS contain quotes, shell
> metacharacters, word-splitting characters, etc. so that's a "B-" answer :)
Well, I may be repeating something you covered in the links, but would
this be a simple solution to possible issues?
Would escaping the $'s provide a possible simple solution to a not too
complex line, if they were serving only as variable holders and did
not need to be resolved before the eval?
Sorry if any redundancy in reply. I just was thinking about this one
issue for now.
* export SOMENAME="abc'def'g"
* echo $SOMENAME
abc'def'g
*eval echo $SOMENAME
abcdefg <---- this is missing single quotes.
*eval "echo \$SOMENAME"
abc'def'g <----- single quotes as expected.
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