Multi-call invocation (GNU Coreutils 9.0)

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Coreutils/docs/latest/Multi 002dcall-invocation

2.14 coreutils: Multi-call program

The coreutils command invokes an individual utility, either implicitly selected by the last component of the name used to invoke coreutils, or explicitly with the --coreutils-prog option. Synopsis:

coreutils --coreutils-prog=PROGRAM …

The coreutils command is not installed by default, so portable scripts should not rely on its existence.