Replace fixed strings only - Page 2

pbillast · #1 (**permalink**) 06-18-2009

(right about the unneeded g)

sed 's/\<oldtext\>/newtext/g'
(not all sed's support this)

almost does what you want except for the "oldtext-" line, since '-' is a word boundary too

askumarece · #2 (**permalink**) 06-18-2009

Sorry... I forgot add this line in my input file.... If I have the below line in my file then it will not work....

something something oldtext

So it will not work.....

tkleczek · #3 (**permalink**) 06-18-2009

This substitues all occurances of oldtext that are surrounded either by blanks or by start/end of the line.

Code:

sed 's/\(^\|[[:blank:]]\)oldtext\([[:blank:]]\|$\)/\1newtext\2/' filename

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Help to replace character strings	rahulrathod	UNIX for Dummies Questions & Answers	5	12-18-2008 05:26 AM
To replace string between two strings	amit1_x	Shell Programming and Scripting	1	10-07-2008 07:02 AM
replace strings in a file	melanie_pfefer	Shell Programming and Scripting	3	08-07-2008 07:55 AM
sed replace with fixed length	McLan	Shell Programming and Scripting	7	05-15-2008 03:57 AM
replace 2 identical strings on different lines	prkfriryce	Shell Programming and Scripting	3	06-15-2007 12:18 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread: