posix - An alias defined in a bash script does not work within the same script -


this question has answer here:

i have simple bash script.

alias myls=ls myls

if execute script, error.

$ bash foo.sh  foo.sh: line 2: myls: command not found
  • why alias not work in script?
  • does behavior conform posix?
  • if indeed not supposed work, please point me authoritative documentation stays this?

see man bash:

aliases not expanded when shell not interactive, unless expand_aliases shell option set using shopt


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