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  1. Feb 2024
  2. unix.stackexchange.com unix.stackexchange.com
    How to write a script that accepts input from stdin or a file?
    1
    1. TylerRick 28 Feb 2024
      if [ "$#" -eq 0 ]; then cat else printf '%s\n' "$@" fi |
      not: command line: cat: useless use of cat shell: pipeline non-recursive
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    unix.stackexchange.com/questions/580971/how-to-write-a-script-that-accepts-input-from-stdin-or-a-file
  3. unix.stackexchange.com unix.stackexchange.com
    Bash function that accepts input from parameter or pipe
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    1. TylerRick 28 Feb 2024
      if [ "$#" -ne 0 ] then printf '%s\n' "$1" else cat fi |

      Comparible to this solution for the case of a script file (rather than function): https://hyp.is/6UIWdNaREe6L5DMx96BIOA/unix.stackexchange.com/questions/580971/how-to-write-a-script-that-accepts-input-from-stdin-or-a-file

      non-recursive shell: pipeline
    2. TylerRick 28 Feb 2024
      Well, here’s a non-recursive solution in which the main commands appear only once:
      non-recursive avoid duplication
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    unix.stackexchange.com/questions/301426/bash-function-that-accepts-input-from-parameter-or-pipe