The builtin commands in Bash can be extremely useful, but what does “builtin” itself actually do? Today’s SuperUser Q&A post has the answer to a curious reader’s question.
Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.
The Question
SuperUser reader lfalin wants to know what the builtin command in Bash does:
I know what a builtin command is, but what does builtin itself do? Executing which ls shows me /bin/ls, but executing which builtin returns nothing. man builtin just gives me a list of builtin commands, one of which is builtin. The rest of the man page explains what a builtin command is, but not what builtin itself is. builtin –help…
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