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A comment on Stupid Unix Tricks. Parent comment

Re:Stupid Unix Tricks by stragies on Friday October 18, 2019 @04:57AM (#21289744)
On (at least) Debian systems (, and probably many more) `ls` is not a built-in, but an external binary (`/usr/bin/ls`) is used.

`which ls` and `help ls` will show you, if it is similar on your system.

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Re:Stupid Unix Tricks by imihai1988 on Friday October 18, 2019 @12:19PM (#21292659)
It does't need to be a built-in to have a man page (many first party and third party libraries come with their own man pages).
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