The Linux command displays the file content line number |linux displays the content as a line number

View file contents: Cat/etc/shadow All contents
The cat command is all output
Cat/etc/shadow-n output content and line number, empty industry output
Cat/etc/shadow-b output content and line numbers, but no spaces are output

Tac/tmp/cat.txt file contents in turn look

Show all results first and then show 15 rows showing the first 15 rows: Cat-n/etc/shadow | Head-n 15
Show all results first and then show 15 lines showing trailing 15 rows: Tac-n/etc/shadow | Head-n 15
You can also cat-n/etc/shadow | Tail-n 15

The Linux command displays the file content line number |linux displays the content as a line number