Cycle for with for-then-else Post: 302844226

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Top Forums Shell Programming and Scripting Cycle for with for-then-else Post 302844226 by kshji on Saturday 17th of August 2013 12:27:57 PM

08-17-2013

Registered User

symcfg show -sid $SID -pool $i -detail -thin -gb |grep "Max. Subscription Percent"
will return some line which include string Max. Subscription Percent and also Enable in same line ?
Have you tested the command and what is the output in this lines where is Max. Subscription Percent ?

If syntax is

Code:

if commandline
then
       # commandline exit code is 0 = ok
       echo ok
else # commandline exit code <> 0
       echo not ok
fi

[ is one of the commands. So it's also [[.
But also symcfg, cp, grep, awk, .. are commands.

Ex. testing how cp works

Code:

if cp file file2  >/dev/null 2>&1
then
      echo "cp done"
else
      echo "cp not so ok"
fi

So something: grep output to the /dev/null - not so interesting to see.

Code:

if symcfg show ... | grep  ...  >/dev/null 2>&1
then
    ...
fi

But you can also test output of grep.

Code:

data=$(symcfg show -sid $SID -pool $i -detail -thin -gb | grep "Max. Subscription Percent" )

# grep some value and if some line include also Enable then okay.
case "$data" in
        *Enable* ) echo "ok" ;;
        *) echo "not ok" ;;
esac

But if line include "Max. Subscription Percent" and "Enable" in this order, then why not using grep something like

Code:

grep "Max. Subscription Percent.*Enable"
# 
data=$(symcfg show -sid $SID -pool $i -detail -thin -gb | grep "Max. Subscription Percent.*Enable" 2>/dev/null)
[ "$data" = "" ] && echo "not ok"
[ "$data" != "" ] && echo "ok"

kshji

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