shell - Hidden features of Bash -

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shell scripts used glue, automation , simple one-off tasks. of favorite "hidden" features of bash shell/scripting language?

  • one feature per answer
  • give example , short description of feature, not link documentation
  • label feature using bold title first line

see also:

insert preceding line's final parameter

alt-. useful key combination ever, try , see, reason no 1 knows one.

press again , again select older last parameters.

great when want else used moment ago.


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