Need your help in understanding this


 
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# 1  
Old 05-13-2013
Need your help in understanding this

Hi,

I found this in a script and I would like to know how this works

Code is here:

Code:
# var1=PART1_PART2
# var2=${var1##*_}
# echo $var2
PART2

I'm wondering how ##* makes the Shell to understand to pick up the last value from the given.
# 2  
Old 05-13-2013
This is called Shell's parameter expansion.. refer shell man page for more information or below link

Shell Command Language
This User Gave Thanks to vidyadhar85 For This Post:
# 3  
Old 05-13-2013
that explains better.. Thank you
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