topic xterm + script in Operating System - HP-UX

xterm + script

Vasudevan MV — Sat, 08 Jun 2002 10:17:46 GMT

Hi,

1. Can any one tell me why this error "xterm: can't execvp /abc.sh" is appearing on the xterm window when I ran this command on the prompt "$ xterm -e abc.sh"?.

2. The abc.sh script exits with value "5" but after execution of this abc.sh with xterm its returning only 0 when I did echo $?. How do I get the return value 5 to the calling shell?

Thanks
Vasu

Re: xterm + script

Steven Sim Kok Leong — Sat, 08 Jun 2002 15:15:51 GMT

Hi,

Try this:

# exec xterm -e "abc.sh 2\> /tmp/abc.err"
# ERRORCODE=`cat /tmp/abc.err`

Hope this helps. Regards.

Steven Sim Kok Leong

Re: xterm + script

Vasudevan MV — Mon, 10 Jun 2002 04:31:13 GMT

Steven,

I have tried your commands, but still I am getting the same error "xterm: can't execvp /abc.sh 2\>/dev/null".

Thanks
Vasu

Re: xterm + script

T G Manikandan — Mon, 10 Jun 2002 04:43:20 GMT

Add the line to your script as the first line.example to execute it in bourne shell

#!/bin/sh

Re: xterm + script

Steven Sim Kok Leong — Mon, 10 Jun 2002 05:01:52 GMT

Hi,

Make sure that your script has executable permissions i.e.

bash-2.05a$ chmod +x ./abc.sh

You can fix the return code issue by using a wrapper script i.e. startabc.sh:

bash-2.05a$ cat ./abc.sh
echo this is a test
adfasdf
bash-2.05a$ ./abc.sh
this is a test
./abc.sh: adfasdf: command not found
bash-2.05a$ echo $?
127
bash-2.05a$ rm /tmp/abc.err
bash-2.05a$ cat ./startabc.sh
./abc.sh
echo "$?" > /tmp/abc.err
bash-2.05a$ xterm -e ./startabc.sh
bash-2.05a$ cat /tmp/abc.err
127

Make sure that ./abc.sh and ./startabc.sh has executable permissions.

Hope this helps. Regards.

Steven Sim Kok Leong

Re: xterm + script

Vasudevan MV — Mon, 10 Jun 2002 05:41:42 GMT

Steven,

My script looks like this

startabc.sh
--------------
xterm -e ./abc.sh
echo $?

abc.sh
-------
echo "hello"
exit 5

When I ran startabc.sh it always return 0 & in the xterm session sometimes the error is coming up "xterm: can't execvp /abc.sh"?.

Thanks
Vasu

Re: xterm + script

Steven Sim Kok Leong — Mon, 10 Jun 2002 05:54:25 GMT

Hi,

> xterm -e ./abc.sh
> echo $?

xterm spawns off a separate shell that does not return the exit code (return code) to the parent shell that spawned off xterm.

Thus, to workaround this limitation, you have to echo the "$?" to a file and read from that file in your startabc.sh script:

./startabc.sh:
=============
./abc.sh
echo "$?" > /tmp/abc.err

Then you run this:

# xterm -e ./startabc.sh
# cat /tmp/abc.err # this displays the return code

If you want, you can put these two lines in another wrapper so that the return code is automatically displayed.

Hope this helps. Regards.

Steven Sim Kok Leong

Re: xterm + script

Steve Steel — Mon, 10 Jun 2002 10:15:28 GMT

Hi

try adding the pathname to xterm and abc.sh

Steve Steel