Need your help in understanding this

Shell Programming and Scripting
1

Hi,

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

Code is here:

# 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

This is called Shell's parameter expansion.. refer shell man page for more information or below link

Shell Command Language

1 Like
3

that explains better.. Thank you