scripting

qleak · **Posted:** Tue, 5 Jul 2005 06:14:08 UTC

I'm trying to set up a bash script to run GAP with a preloaded workspace. This in itself is not to bad:

Code:

#! \bin\bash
/usr/local/bin/gap -L /usr/local/gap/qgap

However.. I'd like for it to be a little smarter. From a virtual terminal or remote login, I'd like it to use the
/usr/local/gap/qgap_console and from an X session I would like it to load /usr/local/gap/qgap.
Sure I could just make 2 scripts and then have to remember which one to run.. but I'd rather make it choose seemlessly.

Any ideas how to do this? Sure I can set up a conditional.. the tricky part is knowing the right variable to see if I'm in X or not.

-Q

Guest · **Posted:** Tue, 5 Jul 2005 07:25:51 UTC

Check the contents of $DISPLAY, that should work over most all systems. If X is not running, it should be empty. I know $DISPLAY is set using startx, may not be the same if you use something else (why would you though?)

-- X Conrad X

qleak · **Posted:** Tue, 5 Jul 2005 15:15:55 UTC

GOD wrote:

Check the contents of $DISPLAY, that should work over most all systems. If X is not running, it should be empty. I know $DISPLAY is set using startx, may not be the same if you use something else (why would you though?)

-- X Conrad X

Good call. Thanks for the help.
Here is my final script

Code:

#!/bin/bash
FILE="/usr/local/gap4r4/qgap"
[ -z "$DISPLAY" ] && FILE="/usr/local/gap4r4/qgap_console"

/usr/local/gap4r4/bin/gap.sh -L $FILE $*

S.O.S. Mathematics CyberBoard

scripting

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