repo/extra/gnugrep/README
2021-08-26 07:22:10 +03:00

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gnugrep
________________________________________________________________________________
grep is a command-line utility for searching plain-text data sets for lines that
match a regular expression. Its name comes from the ed command g/re/p (globally
search for a regular expression and print matching lines), which has the same
effect. grep was originally developed for the Unix operating system, but later
available for all Unix-like systems and some others such as OS-9. [0]
Upstream: https://www.gnu.org/software/grep/
[000] Index
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* Installation ........................................................... [001]
* Setup .................................................................. [002]
* Usage .................................................................. [003]
* References ............................................................. [004]
[001] Installation
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+------------------------------------------------------------------------------+
| |
| $ kiss b gnugrep |
| |
+------------------------------------------------------------------------------+
[002] Setup
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To use GNU grep as the system grep, the alternatives system must be used. The
GNU grep implementation is very fast [1] and is recommended over the default
provided by busybox.
+------------------------------------------------------------------------------+
| |
| $ kiss a gnugrep /usr/bin/grep |
| $ kiss a gnugrep /usr/bin/egrep |
| $ kiss a gnugrep /usr/bin/fgrep |
| |
+------------------------------------------------------------------------------+
To undo these changes run 'kiss a', find the relevant output and run the
corresponding commands. Each line of output from 'kiss a' is a valid command
to give back to 'kiss a'.
[003] Usage
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Refer to the manual pages and command help output.
[004] References
________________________________________________________________________________
[0] https://en.wikipedia.org/wiki/Grep
[1] https://lists.freebsd.org/pipermail/freebsd-current/2010-August/019310.html