Is grep part of coreutils? (If not, why?)
The authoritative source would be http://www.gnu.org/software/software.html from the Free Software Foundation rather than the Wiki page cited in the accepted answer. On that page grep is listed as a separate piece of software.
To quote the Arch Wiki page you refer to:
The scope of this article includes - but is not limited to - those utilities included with the GNU coreutils package.
So even though the article covers grep
, this doesn't automatically mean it's part of coreutils
.
Moreover, this article doesn't list grep
among the tools in coreutils
.