trail is command line tool which keeps only the last n lines of a stream on the terminal screen.
It behaves exactly as tail command if the input is not a continuos stream. Otherwise it behaves as if tail is being run at every point of time.
Example: ping command output on screen
Example: ls command output on screen
cargo install trail_lines
trail command only accept one optional argument:
-l, --lines (default: 5)
Defines how many lines should be kept on terminal.
To disable trailing pass 0.
# Will show results of only recent 10 pings
ping 8.8.8.8 | trail_lines --lines 10
# Will behave similar to `tail` command
ls | trail_lines -l 20