how to remove some contents of a file

[CsqHossein]

hi guys
how can i remove some contents from the middle of a file?
help me plz
thanks

[quirkyusername]

if you mean a text file you can't edit the contents of a text file. You'll have to open the file you want to 'edit' and write the parts you want to another file, leaving out the parts you don't want.

[CsqHossein]

if we have a large file , it would take a long time to be processed.
so i need a way to edit it
does it have any solutions?
thanks

[quirkyusername]

YOU CAN'T EDIT THE CONTENTS OF A TEXT FILE. YOU'LL HAVE TO OPEN THE FILE YOU WANT TO 'EDIT' AND WRITE THE PARTS YOU WANT TO ANOTHER FILE, LEAVING OUT THE PARTS YOU DON'T WANT.

is that any clearer?

[CsqHossein]

OK, be calm.
no problem