Strip prefix from variable - bash

Question

Adding a shell script (/bin/bash) to an automator workflow (copy file path) I want to use this to strip the constant prefix '/Volumes/' from the variable path which is being copied to the clipboard.

EG The copy file path workflow copies '/Volumes/GRAID/audiovideo.mov' to the clipboard, the path I desire to paste is 'GRAID/audiovideo.mov'

Answer 1

To remove a known constant prefix /Volumes/ from a shell variable named foo, you can write:

foo="${foo#/Volumes/}"

(See the Bash Reference Manual, §3.5.3 "Shell Parameter Expansion".)