for name [ [ in [ word ... ] ] ; ] do list ; done
The list of words following in is expanded, generating a list of items. The variable name is set
to each element of this list in turn, and list is executed each time. If the in word is omitted,
the for command executes list once for each positional parameter that is set (see PARAMETERS
below). The return status is the exit status of the last command that executes. If the expansion
of the items following in results in an empty list, no commands are executed, and the return
status is 0.
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