Replace string2 by string3 where string1 is found in line Post: 303022150

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Top Forums Shell Programming and Scripting Replace string2 by string3 where string1 is found in line Post 303022150 by Don Cragun on Sunday 26th of August 2018 09:34:47 AM

08-26-2018

Registered User

Quote:

Originally Posted by baris35

Dear Don,
Thanks for your reply.
I am running under ubuntu 18.04.
Let me specificially give an example for my case:

Let's say, string1 is keyword, string2 is .
I wish to remove dot sign when keyword is found in line:
I do:

Code:

sed '/keyword/s/.//g' TextFile > output

Double quotes is also not sorting it out.

There is no below line in output file:

Code:

Second line with keyword &.

Of course there isn't. In the command:

Code:

sed '/keyword/s/.//g'

keyword and . are not just strings, they are regular expressions. And the regular expression . matches any single character. And globally replacing every character in a line with an empty string changes every line that contains keyword into an empty line.

To match a literal period character, try:

Code:

sed '/keyword/s/\.//g' TextFile > output

or:

Code:

sed '/keyword/s/[.]//g' TextFile > output

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