Date: Thu, 19 Sep 2002 09:04:25 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Peter Leftwich <Hostmaster@Video2Video.Com> Cc: FreeBSD-Questions@FreeBSD.ORG Subject: Re: ~/.terminalrc challenge Message-ID: <20020919060425.GD39149@hades.hell.gr> In-Reply-To: <20020919013316.C83658-100000@earl-grey.cloud9.net> References: <20020919013316.C83658-100000@earl-grey.cloud9.net>
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On 2002-09-19 01:35, Peter Leftwich <Hostmaster@Video2Video.Com> wrote:
> I would like a file similar to my ~/.login (which sets some leave reminders
> and prompt customizations) but only to run when a new gnome-terminal is
> launched, for example some kind of ~/.terminalrc file?
>
> This may be possible via my ~/.cshrc but I am not very crafty at using
> "test" in the first few lines to run `ps -auxww | grep XFree86` and if that
> returns true to run a few lines of code.
That's almost certainly the wrong way of doing something like this.
You can't be sure that the new login session is within a
gnome-terminal, just because some process happens to be called
XFree86. Think of the following series of events:
- You fire up X11.
- You switch to console ttyv0 with CTRL+ALT+F1.
- You log into console ttyv0.
- Your ttyv0 console login runs .terminalrc !!!
I'm sure that gnome-terminal has some other way of firing up a shell
with customised settings.
Or you could check for DISPLAY in the environment *and* make sure that
this is a gnome-terminal by making sure that the process-ID of $$
matches a running gnome-terminal instance. That can get tricky
though. An example of a way to determine the name of the program that
spawned the currently running shell (bash in my case) is shown below:
$ ps -o pid,ppid,command | awk -v pid=$$ '$1 == pid && $3 ~ bash {print $2}'
219
$ ps -ax -o pid,ppid,command | awk '$1 == 219 {print $0}'
219 1 screen -a -O
Using this in a shell script could be a bit tricky:
pid=`ps -o pid,ppid,command |\
awk -v pid=$$ '$1 == pid && $3 ~ bash {print $2}'`
if ps -ax -o pid,ppid,command | awk '$1 == '"$pid"' {print $0}' |\
grep screen >/dev/null 2>&1 ;then
#
echo "We are running bash under screen."
else
#
echo "What is this? Where am I?"
fi
I hope this helps.
--
Giorgos Keramidas <keramida@{ceid.upatras.gr,freebsd.org}>
FreeBSD 4.6-RELEASE #0: Wed Sep 18 23:08:01 EEST 2002
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