When you are working on text files you may need to find and replace a string in the file. Sed command is mostly used to replace the text in a file. This can be done using the sed command and awk command in Linux
line=$(sed "s/$replace/$replacewith/g" <<< "$line") Now, you may think this is more complicated than the native bash string method. Perhaps, but sed is very powerful and you can use it to replace all the occurrences of a string in a file. sed -i 's/$replace/$replacewith/' ...
/pattern/is the search pattern that tellssedto look for a specific string in the file and replace pattern with the string you’re searching for. a\is the append command that tellssedto add a new line after the line containing the search pattern. new line of textis the text you want to...
Thesed command, short forStream Editor, is a powerful text processing tool in Linux, which is widely used for text manipulation tasks, including searching, finding and replacing text, and even performing advanced scripting. This article will guide you through the basics ofsed, explain how to us...
Also, check this article on how you can use thesed command to replace a matching string in a file. Note:Since this is a demonstration article, we use sed command without the-ioption, which is similar to the“dry run”option, and will display the actual output without making any changes...
Replace Specific Occurrence in a Line Using the sed Command Thesedcommand lets you choose which occurrence of a specified string you want to replace within each line. To do so, add a number flag such as1,2, etc.: sed 's/old_string/new_string/#' filename.txtCopy ...
zIt is used to clear the line. ‘=’It is used to print the line number. Replace multiple lines by using the `sed` command from the terminal: How the `sed` command can be used to replace the multiple lines from a file from the terminal is shown in this part of this tutorial. Crea...
Use theddirective insedto delete a single line in a text file: sed [line_number]d' [file_path]Copy Replace[line_number]with the line number you want to delete and the[file_path]with the path to the text file. Use the following command to delete line 5 from theinput.txtfile: ...
Replace all content URLs to Confluence Server format with this command (using the example URLs above) sed example 1 sed -r -e 's/mycompany\.atlassian\.net\/wiki\/spaces\/[A-Z0-9]+\/pages\/([0-9]+)\/[A-Za-z0-9+.]+/confluence.mycompany.com...