How to disable a shopt option in Bash?

Question

How to disable a shopt option, for example extglob?

I have this in my .bashrc file:

shopt -s extglob

Answer 1

Use the -u option:

shopt -u extglob

• -s is for setting and -u is for unsetting.

From help shopt (or shopt --help as well on BSD systems):

Options:
  -o    restrict OPTNAMEs to those defined for use with `set -o'
  -p    print each shell option with an indication of its status
  -q    suppress output
  -s    enable (set) each OPTNAME
  -u    disable (unset) each OPTNAME

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To see how to do shopt in a clean way, see this:

https://github.com/codeforester/base/blob/master/lib/shopt.sh