Prompt

• Arch Linux Bash/Prompt customization

Environment variables

Name	Comment
PWD	The current working directory. Requirement in POSIX. The variable should be available in all shells compliant with POSIX.

Practical commands

Exempt file

directory_x/
  directory_y
  directory_z
  file_a
  file_b

$ shopt -s extglob
$ mv !(directory_y) directory_x/directory_z

Include files and directories that begin with dot

directory_x/
  .directory_z
  .file_a
  .file_b
directory_y/

echo 'alternative #1'
$ shopt -s dotglob
$ mv directory_x/* directory_y/

echo 'alternative #2'
$ mv directory_x/.[!.]* directory_y/

Rename files

$ rename --version
/usr/bin/rename using File::Rename version 0.20
$ rename 's/\.jpeg$/.jpg/' *

$ rename --version
rename from util-linux 2.30.2
$ rename .jpeg .jpg *

Debug

• bash_strict_mode.md
• set -euxo pipefail