Which command will delete the lines containing the pattern?

Which command will delete the lines containing the pattern?

Sed Command to Delete Lines: Sed command can be used to delete or remove specific lines which matches a given pattern or in a particular position in a file.

How do you delete a line of code in terminal?

Deleting a Line

1. Press the Esc key to go to normal mode.
2. Place the cursor on the line you want to delete.
3. Type dd and hit Enter to remove the line.

How to delete lines that come after a specific pattern?

Every line in PATTERN_line.txt contains the line number, in each file, where the pattern exists. Now, I’m trying to use those numbers to delete all lines that come after the pattern to the file end. This means I need to keep the file from the head to the patten line which must be included.

How to delete the first line of a file?

I want to delete 1st line and last line using shell command. -i option edit the file itself. You could also remove that option and redirect the output to a new file or another command if you want. You can also delete a range. For example, 1,5d would delete the first 5 lines.

How to find lines matching a pattern in text processing?

Where f is the path to the file, between quotes. (?!HERE IT IS) negative lookahead assertion which makes the regex engine to match all the line starting boundary ( which is usually matched by ^) only if it’s not followed by the string HERE IT IS Save the script in a file, say script.py and then run it through the below command on the terminal.

How to remove lines from a Unix file?

Note: In all the above examples, the sed command prints the contents of the file on the unix or linux terminal by removing the lines. However the sed command does not remove the lines from the source file. To Remove the lines from the source file itself, use the -i option with sed command. > sed -i ‘1d’ file