Differences

This shows you the differences between two versions of the page.

--- linux_wiki:awk [2015/03/09 22:53]
billdozor
+++ linux_wiki:awk [2019/05/25 23:50]
@@ Line 1: / Line 1: @@
-====== Awk ======
-**General Information**
-AWK is a pattern scanning and processing language.
-Gawk is the GNU Project's implementation of the AWK programming language.
-I typically stick to using gawk and in most cases, awk is a symlink to gawk.
-This page will contain useful gawk commands as I run into them.
-**Checklist**
-  * Distros: All
-  * gawk installed
-----
-===== Gsub =====
-gawk's gsub string function matches and replaces regular expressions. This can replace a grep | sed combination.
-<code bash>
-~$ echo -e "Hello, friend.\nHello, how are you?\nI am fine." | gawk 'gsub(/Hello/,"Goodbye")'
-Goodbye, friend.
-Goodbye, how are you?
-</code>
-Notice that the last line "I am fine." is not displayed at all because it doesn't match the regex. (Hello)