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If value in varA is not in varB then do something

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Top Forums Shell Programming and Scripting If value in varA is not in varB then do something
# 1  
Old 04-16-2010
If value in varA is not in varB then do something
Basically what I need to do, is read the value of varA, and if it's in varB, then do something, if not, do something else.
varA will contain a single string like:


Code:
proj_choice="Test"

Code:
test_var="ABC Test blah foobar etc"


So if the value of proj_choice is contained in test_var, do something if not do something else:
# 2  
Old 04-16-2010
One approach is to use grep command

Code:
#!/bin/ksh

proj_choice="Test"
test_var="ABC Test blah foobar etc"
echo $test_var | grep $proj_choice > /dev/null 2>&1
ret_val=$?

if [ $ret_val -eq 0 ]
then
 echo "Found"
else
 echo "Not Found"
fi

# 3  
Old 04-16-2010
if echo 123 | grep -q 2; then echo ok; fi
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