Delete line in text file bash

I have been trying to use: sed -i. Improve this question. Alexis Dodson Alexis Dodson 1 2 2 bronze badges. AFAIK that should have worked since the -i option implies the -s option, meaning that 2,3d should have been applied to each file separately. However if you'd tested it without the -i and without explicitly adding -s you would have seen the changes applied only to the first file.

Add a comment. Active Oldest Votes. Improve this answer. Thank you so much! The first one worked like a charm! Then please click the Accept checkmark.

Could you add explanations what these commands do? Skip to content. Tags: awk examples , delete specific lines , grep examples , sed examples. Add a Comment Cancel reply Your email address will not be published. This flexibility means that there are several different options available in the editor. All of it involves commands from the escape mode of the editor.

To enter escape mode in vi , hit the escape key at any time from within the editor. The second part is the regular expression that needs to match. This will delete all empty lines, but will not remove lines that contain a blanks, spaces or white spaces.

Modifying the regular expression as above to match one or more occurrence of all white space will make sure that it will delete empty lines as well as the blank lines. This is actually the negation of the previous syntax. There are almost limitless options here to pretty much do anything, such as deleting all lines that match three blanks, condense multiple blank file into a single blank line, etc etc…..

Also, the expressions used above or a variation thereof is used later in the post with the command line utilities as well. Kate is another graphical editor. It is more or less the default text editor for KDE. You can of course delete the blank lines manually one after another as in any text editor, but Kate does provide some easy to use commands to let you do this.

This will not however remove any lines with blanks or white spaces in them. Asked 9 years, 5 months ago. Active 6 years, 4 months ago. Viewed 18k times. Improve this question. Sara Sara 2, 10 10 gold badges 45 45 silver badges 76 76 bronze badges. Add a comment. Active Oldest Votes. This is because of the backticks. Improve this answer.