I need to read a file with bash and remove the request line? Some similar to pop/push functions.
How can i do it?
You can use sed
to delete specific line numbers or lines that match a given pattern:
$ cat file
line 1
line 2
line 3
line 4
line 5
$ sed -i '3d' file # Delete the 3rd line
line 1
line 2
line 4
line 5
$ sed -i '/^line 4$/d' file # Delete the line that matches the pattern
line 1
line 2
line 3
line 5
$ sed '$d' file # Delete the last line in the file
line 1
line 2
line 3
line 4
You will not be able to push
these lines back however..