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RE: Checking if the X Server is running


O. Olson wrote:
> --- Holger Krull <holger.krull@gmx.de> ha scritto:
>> 
>> There probably is a more elegant solution but doing
>> ps |grep Xwin >/dev/null || run Xwin -your options
>> here
>> 
>> will only start Xwin if it is not running already.
>> (Assuming you will only start one Xwin)
>> 
> 
> Dear Holger,
> 
> 	I don't think I managed to get this to work. Actually
> I am not sure if the pipes are working, because I am
> getting no output for
> 
> $ ps |grep Xwin
No you shouldn't

> 
> However for
> 
> $ ps
>       PID    PPID    PGID     WINPID  TTY  UID
> STIME COMMAND
>     23492       1   23492      23492  con  500
> 11:06:42 /usr/X11R6/bin/XWin

Observe it's XWin the first two are capitals.
so try 
ps |grep XWin
or
ps |grep -i xwin
which makes a case insensitive comparison (better if yor're unsure)
>     25152       1   25152      25152  con  500
> 13:14:28 /usr/bin/xterm
> I   25188   25152   25188      25208    0  500
> 13:14:28 /usr/bin/bash
>     26456       1   26456      26456  con  500
> 13:18:41 /usr/bin/xterm
> I   26492   26456   26492      26512    1  500
> 13:18:41 /usr/bin/bash
>     26128       1   26128      26128  con  500
> 13:28:20 /usr/bin/bash
>     23048   26128   23048      20344  con  500
> 13:28:23 /usr/bin/ps
> 
> So this seems OK - so I am wondering why the former
> command did not work. Could this be a problem with the
> Pipe?? I have no experience with this.
> 
> Thanks a lot for your help,
> O.O.
> 
> 
> 
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