Append a line of text after a line matching a pattern
Let’s say we’ve got:
$ cat file.txt1 2 3 4 5 6 7 | blah blah blah append after me blah bleh! append after me blah blah blah bleeeh |
This will add “new stuff” after every line that says “append after me”:
$ sed -i '/append after me/a new stuff' file.txt
Bingo:
$ cat file.txt1 2 3 4 5 6 7 8 9 | blah blah blah append after me new stuff blah bleh! append after me new stuff blah blah blah bleeeh |
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