topless - display command output on the whole screen like ``top''
topless [-crhv] [-s seconds] [-n number] COMMAND
topless reads various command output, displays it on the whole screen (like less), and periodically updates it like top.
topless can be used with almost every sort of command, but is particularly useful when used with the command to monitor the system, such as ps, netstat or fstat. See EXAMPLES below for details.
sleep(1) command accepts and honors a non-integer number of seconds,
seconds can be a non-integer number.
Display the output of ps axuww like top:
% topless ps axuww
Same as the above, but the lines different from the previous screen update are colorized.
% topless -c ps axuww
Set the screen update periods to 0.1 seconds
(suppose the sleep(1) command can honor non-integer number of seconds):
% topless -s 0.1 ps axuww
Once a line is colorized, that line becomes blue on next screen update, and remains blue after the next 10 times update:
% topless -c -n 10 netstat -a
COMMAND can be a more complex one, such as the one that contains pipe:
% topless 'fstat -f /var| sort -k8 -nr'
topless can work on various platforms, and are reported to work on the following platforms:
FreeBSD, NetBSD, OpenBSD, Linux, MacOS X, SuSE 9.1,
Solaris 10/8 (bash is required)
If you find topless does not work on your platform, feel free to send a patch to the author. Your patch is *always* welcomed. ;)
Special care must be taken when you search about topless, especially when you are at your office or with your family, because the search results may not be what you expected.
top(1) less(1)