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Full Discussion: Tracing a terminal
Top Forums UNIX for Advanced & Expert Users Tracing a terminal Post 19274 by alex blanco on Monday 8th of April 2002 06:24:03 PM
Old 04-08-2002
kind of UNIX

Well sorry I miss the UNIX kind.

Im using SOlaris 7

Test Your Knowledge in Computers #253
Difficulty: Easy
The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense originally designed by the Jefferson Airplane Company.
True or False?

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WATCH(1)							Linux User's Manual							  WATCH(1)

watch - execute a program periodically, showing output fullscreen SYNOPSIS
watch [-dhvt] [-n <seconds>] [--differences[=cumulative]] [--help] [--interval=<seconds>] [--no-title] [--version] <command> DESCRIPTION
watch runs command repeatedly, displaying its output (the first screenfull). This allows you to watch the program output change over time. By default, the program is run every 2 seconds; use -n or --interval to specify a different interval. The -d or --differences flag will highlight the differences between successive updates. The --cumulative option makes highlighting "sticky", presenting a running display of all positions that have ever changed. The -t or --no-title option turns off the header showing the interval, command, and current time at the top of the display, as well as the following blank line. watch will run until interrupted. NOTE
Note that command is given to "sh -c" which means that you may need to use extra quoting to get the desired effect. Note that POSIX option processing is used (i.e., option processing stops at the first non-option argument). This means that flags after command don't get interpreted by watch itself. EXAMPLES
To watch for mail, you might do watch -n 60 from To watch the contents of a directory change, you could use watch -d ls -l If you're only interested in files owned by user joe, you might use watch -d 'ls -l | fgrep joe' To see the effects of quoting, try these out watch echo $$ watch echo '$$' watch echo "'"'$$'"'" You can watch for your administrator to install the latest kernel with watch uname -r (Just kidding.) BUGS
Upon terminal resize, the screen will not be correctly repainted until the next scheduled update. All --differences highlighting is lost on that update as well. Non-printing characters are stripped from program output. Use "cat -v" as part of the command pipeline if you want to see them. AUTHORS
The original watch was written by Tony Rems <> in 1991, with mods and corrections by Francois Pinard. It was reworked and new features added by Mike Coleman <> in 1999. 1999 Apr 3 WATCH(1)

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