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Display, set or unset values of shell attributes and positional parameters. More information:

  • Display the names and values of shell variables:


  • Mark variables that are modified or created for export:

set -a

  • Notify of job termination immediately:

set -b

  • Set various options, e.g. enable vi style line editing:

set -o {{vi}}

  • Set the shell to exit as soon as the first error is encountered (mostly used in scripts):

set -e