This appendix describes some of the hundreds of standard Unix programs available on a command line. These are also called Unix utilities.
We generally don't include commands that are built in (see the section "Where the Commands Are Located" in Chapter 1) to the shell. We also don't describe many programs. To see some of the others, use
ls to list the directories
/usr/bin. Also check out
/usr/local/bin. (In Chapter 2 we developed an easier way to do this.)
To learn more about a program named (for example)
man xyz or
||A programming language useful for processing text as either strings or numbers. See also |