Question

I wanted to do a string replacing with bash , which will find the parent path from the current running program’s path.

So i tried to removing everything , from the last ‘/’ to the end with regular expression:

echo ${0#/.*#}

But it’s not working , and please don’t let me use external programs , it’s better getting everything with bash…

Thanks !

Answer 1

Do you mean something like this –

[jaypal:~/Temp] a="/Volumes/Data/jaypalsingh/Temp/file.txt"
[jaypal:~/Temp] echo ${a%/*}
/Volumes/Data/jaypalsingh/Temp