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History. There are two historical lines of a rename command, with the same basic purpose but completely different syntax and capabilities: The rename command in the util-linux package. It appeared in version 2.10e and the program is dated 2000-01-01. A perl script, which was distributed with Perl as an example program. The Debian changelog records it being ...


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free is provided by procps-ng; Debian 8 has version 3.3.9, which uses the old style with a separate line for buffers/cache, while Gentoo and presumably RHEL 7.x have version 3.3.10 or later which uses the new style. You can see the reasoning behind the change in the corresponding commit message. If you really want the old-style output you can run an older ...



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