How to replace whole line containing a string using SED?

How to replace whole line containing a string using SED?

PS: DO NOT forget that the -i changes actually the text in the file… so if the pattern you defined as “Revision” will change, you will also change the pattern to replace. So if you set the pattern “Revision: 1190” it’s obviously not the same as you defined them as “Revision:” only…

How to delete empty lines using SED Stack Overflow?

A shorter version that uses ERE, for example with gnu sed: sed -r ‘/^\\s*$/d’ (Note that sed does NOTsupport PCRE.) Share Improve this answer Follow edited Nov 27 ’18 at 11:46 answered May 7 ’13 at 8:24 KentKent 174k3030 gold badges212212 silver badges272272 bronze badges 4 3

How to insert a newline after a line using SED?

To answer the question as asked, you’d have to do sed ‘s/pattern.*/&\ /’, otherwise you’ll insert the newline right after the match instead of at the end of the line.

How to insert a new line after a pattern in Bash?

G Append a newline to the contents of the pattern space, and then append the contents of the hold space to that of the pattern space. Incidentally, this happens to be covered in sed one liners: It will add a return after the pattern while g will replace the pattern with a blank line.

How to replace a line with a number?

The following examples demonstrate the removing or changing of text by specific line numbers: # replace line 17 with some replacement text and make changes in file (-i switch) # the “-i” switch indicates that we want to change the file.

Is the \\ after the C redundant in SED?

Works fine if the replacement string/line is not a variable. The issue is that on Redhat 5 the \\ after the c escapes the $. A double \\\\ did not work either (at least on Redhat 5). Through hit and trial, I discovered that the \\ after the c is redundant if your replacement string/line is only a single line.

How to replace a word in Stack Overflow?

Or for the situation test test:blabla test where you only want to replace the word following : use sed ‘s/: [^ ]*/:replaceword/’: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers.

How can I use sed to read from standard input?

However you could cobble something together using sed -f – to read commands from standard input, together with your shell. For example: If the line number matches either 1, 10, or 100, branch to label 1; on other lines, just branch to the end (which, by default, prints the line).

Can a SED address consist of more than one line?

As far as I know, sed addresses may only consist of a single line, or a range of lines. However you could cobble something together using sed -f – to read commands from standard input, together with your shell. For example:

How to ignore a case insensitive match in SED?

-i to ignore case and -v to invert the matches. If you want to use sed you can do: sed ‘/ [dD] [oO] [gG]/d’ inputfile GNU sed extends pattern matching with the I modifier, which should make the match case insensitive but this does not work in all flavors of sed.

How to replace multiple patterns in a string?

Multiple replace operations: replace multiple patterns with the same string A good r e pl acement Linux tool is rpl, that was originally written for the Debian project, so it is available with apt-get install rpl in any Debian derived distro, and may be for others, but otherwise you can download the tar.gz file from SourceForge.

What does the n mean in SED delete?

The -n means don’t print by default. The first pattern searches for ‘text’, prints it if matched and skips to the next line; the second pattern does the same for ‘blah’. If the ‘n’ was not there then a line containing ‘text and blah’ would be printed twice.

Can a SED be un-capitalised in regex-SED?

PS though we know what you mean, SED should not be capitalised– Sanjay ManoharSep 22 ’11 at 20:01 @Sanjay Okay I will un-capitalize sed. Can you post an answer in the answer section next time, not the comments?

How to tell SED to notmatch lines with xusing?

You can tell sed to notmatch lines with xusing the syntax below: sed ‘/x/! s/su//’ file See kkeller’s answer for another example. Share Improve this answer Follow edited May 23 ’17 at 11:45