Pattern Matching.. 1

[jestrada101]

How can I see if there is a pattern in a string?

example

variableA="ABCDEFG"
variableB="D"

I'd like to know how to see if a variableB or "D" exists in variableA.

Thanks for any guidance..
JE

 

[SteveR77]

JE,

You can do the following -

print $A | grep $B

The only way the statement will return anything is if $B is a part of the $A variable.


Steve

 

[aigles]

You can also use expr :

if expr "$variableA" : ".*variableB.*" >/dev/null
then
# variable B exists in variable A
else

fi


With ksh you can do :

if [[ "$variableA" = *${variableB}* ]]
then
# variable B exists in variable A
else

fi


'expr' use Regular Expression
Ksh test use globbing patterns


Jean Pierre.

 

[jestrada101]

Thanks all.. both work perfect.

 

[PHV]

Yet another method:

case $variableA in *${variableB}*)
  echo "$variableB is in $variableA";;
esac

Hope This Help
PH.