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Toggle shell options or set the values of positional parameters. More information:

  • Display the names and values of shell variables:


  • Export newly initialized variables to child processes:

set -a

  • Write formatted messages to stderr when jobs finish:

set -b

  • Write and edit text in the command line with vi-like keybindings (e.g. yy):

set -o {{vi}}

  • Exit the shell when (some) commands fail:

set -e