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Bash 'shopt' doubt

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# 1  
Old 10-15-2008
Bash 'shopt' doubt
Hi,

I am using bash shell's extended pattern matching.
What tweak the following code needs in order to get the expected output?

Code:
shopt -s extglob
f="a@b@_c@d@_e"
echo "${f/@(@|@_)/__}"

My expected output is:
a__b__c__d__e

but the actual output is:
a__b@_c@d@_e
# that is, how to make the change global as like echo $f | sed 's/@\|@_/__/g'
Last edited by royalibrahim; 10-15-2008 at 10:35 AM..
# 2  
Old 10-15-2008

bash's extended pattern matching only works on filename expansion, not on parameter expansion.
# 3  
Old 11-10-2008
bash parameter expansion
In bash parameter expansion, do we have any such syntax as below?
Code:
echo "${!var*}"

consider, var is a variable previously set to some arbitrary string value
# 4  
Old 11-10-2008

What do you want it to do?

I suggest that you read the Parameter Expansion section of the bash man page.
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