TOPLESS(1) General Commands Manual TOPLESS(1)NAMEtopless - display command output on the whole screen like "top"
SYNOPSIStopless [-cwVhv] [-s seconds] [-n number] [-a command] COMMAND
DESCRIPTIONtopless 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.
OPTIONS-c The lines difference from the previous screen update are colorized.
(default: false)
-s seconds
Set the screen update periods to seconds seconds. If the sleep(1)
command accepts and honors a non-integer number of seconds, seconds
can be a non-integer number. (default: 1)
-n number
The lines are kept colorized for number times screen update when -c
is also enabled. Once a line is colorized, that line becomes blue
on next screen update, and remains blue until the line returns to
be original color. (default: 1)
-a command
Topless enforce the specified command when COMMAND output gets
difference from the previous output assumed for alert use, instead
of -c use for monochrome monitor or others. (default: false)
-w Topless will use as many columns as necessary without regard for
your window size. (default: true)
-V Topless gets information header. (default: false)
-h Print help message.
-v Print version.
KEY COMMAND
q quit toplessEXAMPLES
Display the output of "ps axuww" like top:
% topless ps axuww
Same as the above, but the lines difference 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-c 'sockstat | egrep "([0-9]{1,3}[.]){3}[0-9]{1,3}"'
Display the outout of "ps axuww" like top with information header like
watch(1) of Linux:
% topless-V ps axuww
Alert when /var/log/messages gets change:
% topless-a "tput bl" tail /var/log/messages
Alert when /var/log/messages gets change running as deamon mode:
# kldload speaker
# daemon topless-a "echo AAA > /dev/speaker" tail /var/log/messages > /dev/null
AUTHORS
Daichi GOTO <daichi@FreeBSD.org>
KOMATSU Shinichiro <koma2@lovepeers.org> (documents)
PORTABILITYtopless can work on various platforms, and has been reported to work on
the following platforms:
FreeBSD, NetBSD, OpenBSD, Linux, MacOS X, SuSE 9.1,
Solaris 10/8 (ksh 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* welcome. ;)
CAVEATS
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.
SEE ALSOtop(1)less(1)topless 2005-12-21 TOPLESS(1)
