Gnu/coreutils/Multi 002dcall-invocation
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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.