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ROOT ‹ FreeBSD, Linux and AIX ‹ Shell Scripting and Programming ‹ How to replace \w SED multiple matches on the same line without piping

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How to replace \w SED multiple matches on the same line without piping

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mandrei99

Post subject: How to replace \w SED multiple matches on the same line without piping | Posted: Tue Oct 08, 2013 6:29 am

Joined: Tue Aug 04, 2009 9:16 am
Posts: 250

How to replace \w SED multiple matches on the same line without piping

SED's replacing mechanism replaces only the first occurrence each line. To change this, use the "/g" flag.

Example when sed replaces first match only:

Code:

[root@rhel5 ~]# echo "test test asdf test" >test.html
[root@rhel5 ~]# echo "test test asdf test" >>test.html
[root@rhel5 ~]# sed -i 's/test/replacement/' test.html 
[root@rhel5 ~]# cat test.html 
replacement test asdf test
replacement test asdf test

Example when sed replaces all matches on each line:

Code:

[root@rhel5 ~]# echo "test test asdf test" >test.html
[root@rhel5 ~]# echo "test test asdf test" >>test.html
[root@rhel5 ~]# sed -i 's/test/replacement/g' test.html 
[root@rhel5 ~]# cat test.html 
replacement replacement asdf replacement
replacement replacement asdf replacement

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Topics		Author	Replies	Views	Last post
Topics related to - "How to replace \w SED multiple matches on the same line without piping"
	Echo new line in linux - supress new line or echo multiple new lines	mandrei99	0	6020	Wed Jan 14, 2015 5:26 pm mandrei99
	How to replace new line in perl script	mandrei99	1	4929	Wed Jun 26, 2013 8:18 am admin
	grep match pattern: Binary file bincharacters.txt matches - How to make grep treat a file as text	mandrei99	0	2427	Wed Dec 11, 2013 7:15 am mandrei99
	How to replace dot or any character with AWK	mandrei99	0	15893	Tue Jan 28, 2014 6:35 am mandrei99
	AWK: How to replace a newline with actual \n	admin	0	2504	Thu Jul 20, 2017 11:02 am admin
	SED how to remove multiple white spaces from a string	debuser	0	11263	Thu Feb 25, 2010 7:14 am debuser
	Unix shell - using TR to replace new lines with spaces	debuser	0	8832	Thu Feb 25, 2010 8:08 am debuser
	PERL: How to replace non-ascii characters/bytes in a file	admin	0	3372	Fri Apr 10, 2015 8:58 am admin
	SED uncomment line - How to uncomment a line or all lines with SED	mandrei99	0	7766	Wed Jan 14, 2015 5:08 pm mandrei99
	How to convert a text into a list of words, one per line	LaR3	0	8966	Wed Aug 05, 2009 7:02 am LaR3

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