[Ilugc] watch a process every few seconds
- From: knura9@xxxxxxxxx (Arun Khan)
- Date: Fri, 30 Nov 2012 22:14:01 +0530
On Fri, Nov 30, 2012 at 8:02 PM, Girish Venkatachalam
<girishvenkatachalam at gmail.com> wrote:
On Fri, Nov 30, 2012 at 5:21 PM, Guruprasad <lgp171188 at gmail.com> wrote:
On Fri, Nov 30, 2012 at 4:35 PM, Girish Venkatachalam
<girishvenkatachalam at gmail.com> wrote:
You have watch command.
$ watch ls -ltr
or you can get a clock with watch.
Just think...
Doesn't this list the contents of a directory ordered by modified time
in reverse order? But the subject says "watch a process every few
seconds".
Please read my mail carefully. Again. Ask your friends.
I concur with Guruprasad.
man watch, in Debian Wheezy, gives the following:
watch - execute a program periodically, showing output fullscreen
*periodically* is the key word above.
While your *subject line* seems to suggest that "the" process is
running continuously and one can watch it's std out/err periodically
for instance what top does in default mode.
In the example that you have cited, ls -ltr runs once, it's std out
displayed and that PID is gone. The next time watch executes ls -lt
is a *new* process i.e. new PID.
-- Arun Khan
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