New posts in Sed

Comment from start of file to a pattern matched line using sed

how to insert new line if a line has more than 60 characters

Copy previous line to current line from text file

Copy line and insert it in a new position with sed or awk

Delete all lines which don't have n characters before delimiter

What difference does it make matching a word with/without a trailing whitespace?

Extract substring according to regexp with sed or grep

Why is `sed` no op much faster than `awk` in this case

insert EOF statement before the last line of file

Swap a line with another