topic Re: Return code for remote shell in Operating System - HP-UX

Return code for remote shell

Ila Nigam — Mon, 02 Jun 2003 18:47:43 GMT

Any idea how to get the exit status/return code for any remote shell command? Always get 0 exit status even if it fails.

Thanks

Re: Return code for remote shell

James R. Ferguson — Mon, 02 Jun 2003 18:52:15 GMT

Hi:

You can (should) write the return code of the process you want to interrogate (after the fact) into a file, and then examine that file for the value the process returned.

Regards!

...JRF...

Re: Return code for remote shell

A. Clay Stephenson — Mon, 02 Jun 2003 18:52:49 GMT

This thread pretty much covers all the bases.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x7e2d8ffa98a2d5118ff10090279cd0f9,00.html

Re: Return code for remote shell

Chris Vail — Mon, 02 Jun 2003 19:29:03 GMT

Best deal of all: stop using remote shell altogether. Use secure shell instead. Secure shell will return the exit status of whatever it ran on the remote host:
# ssh REMHOST "uname -n"
# REMHOST
# echo "$?"
# 0
# ssh REMHOST "uname -b"
uname: illegal option -- b
usage: uname [-amnrsvil] [-S nodename]
# echo "$?"
1
#

You can get secure shell from softward.hp.com or a lot of other places. Attached is the document I seem to be posting at least once day that describes how to install it and use it so that you won't be challenged for passwords.

Re: Return code for remote shell

Bill Hassell — Mon, 02 Jun 2003 20:18:07 GMT

The return code for remsh is working correctly: it returns 0 if the remsh command can connect to the remote system and send the rest of the command line to the remote system. There is only one return code to indicate remsh's success, not the command(s) sent to the remote system. remsh will return a non-zero value if the HOSTNAME is not valid or refuses to allow a login. Command results must be returned through a separator mechanism as mentioned in the above comments.

Re: Return code for remote shell

Brian Crabtree — Mon, 02 Jun 2003 21:59:46 GMT

You could also do something like:

REMSTAT=`remsh remhost 'cmd 1> /dev/null 2>&1 ;
if [ $? -eq 1 ]; then
echo 1
else
echo 0
fi'`

Thanks,

Brian