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Full Discussion: how do I say "if myvar = doe or ray or mii"
Top Forums Shell Programming and Scripting how do I say "if myvar = doe or ray or mii" Post 302201364 by DeCoTwc on Monday 2nd of June 2008 04:53:27 AM
Old 06-02-2008
how do I say "if myvar = doe or ray or mii"
Ok, I have what I think is a relatively simple question, but being me I'll give the full background. In writing a new CheckSystem for one of my servers at work I want to check for core dumps. I was originally doing this like so:
Code:
dumps=`ls -ltr /dvs/dncs/tmp/corefiles/|awk '{print $9}'|egrep "qamManager|dsm|drm|";ls -ltr /dvs/dncs|awk '{print $9}'|grep core`
if [ "$dumps" = "drm" ]
then 
echo "###################################"
echo "There has been a core dump for the following Processes:"
echo "###################################"
ls -ltr /dvs/dncs/tmp/corefiles|grep drm
echo "###################################"
fi

if [ "$dumps" = "dsm" ]
then
echo "###################################"
echo "There has been a core dump for the following Processes:"
echo "###################################"
ls -ltr /dvs/dncs/tmp/corefiles|grep dsm
echo "###################################"
fi
if [ "$dumps" = "qamManager" ]
then
echo "###################################"
echo "There has been a core dump for the following Processes:"
echo "###################################"
ls -ltr /dvs/dncs/tmp/corefiles|grep qamManager
echo "###################################"
fi
if [ "$dumps" = "core" ]
then
echo "###################################"
echo "There has been a core dump for the following Processes:"                                                                                    
echo "###################################"                                                                                                                   
ls -ltr /dvs/dncs/|grep core
echo "###################################"   
fi

I know this works as we (unfortunately) had a dump on Saturday, and the script now returns

Code:
###################################
There has been a core dump for the following Processes:
###################################
drwxrwxrwx   3 dncs     dncs         512 May 31 23:49 drm
###################################

However this seemed like a sloppy implementation to me, plus I realized (oddly enough while on a rollercoaster at 6 flags today) that in the event of more than one core dump the script isn't going to work as the variable isn't going to match. So tonight I (agonizingly) amended the script to:

Code:
dumps=`(ls -ltr /dvs/dncs/tmp/corefiles/|awk '{print $9}'|egrep "qamManager|dsm|drm|";ls -ltr /dvs/dncs|awk '{print $9}'|grep core)`
for x in $dumps;
do  
if [ $x = "drm" ]
then 
echo "###################################"
echo "There has been a core dump for the following Processes:"
echo "###################################"
ls -ltr /dvs/dncs/tmp/corefiles|grep drm
echo "###################################"
fi
done

Now, this works...but only because it specifies just the one thing that I know it's going to match. I don't know the syntax on how to say "if $x = drm or dsm or qamManager or core then yadda yadda yadda" and I assume that there must be a way to do this with out running 4 different for/if loops.

I'm pretty certain that I could work my way around this issue by echoing $dumps and feeding it through a nawk statement... (I know my logic slightly better in nawk) but I'm trying to fill in my fundamental skills. I know this is a really basic question but I'd any help I'd appreciate.

Also, as with everything I post here, if anyone has an overall criticism on my implementation of solving my problem, I'd love to hear it...that's how you learn.

(oh, this is all in bash, you can't see the shebang line as this is cut from larger scripts)
 

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