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Full Discussion: Need help for export command
Top Forums Shell Programming and Scripting Need help for export command Post 302450885 by agama on Saturday 4th of September 2010 11:36:45 AM
Old 09-04-2010
Exporting a variable to the local environment isn't going to help in this case.
You can, however, take advantage of the feature where any variable assignment placed in front of the command on the command line is placed into the environment of the process that is started. For instance the small script:

Code:
#!/usr/bin/env ksh
echo "($SOME_VAR)"
exit

Yields two different results depending on whether the variable is assigned on the comand line:
Code:
$ export SOME_VAR=default
$ script
(default)
$ SOME_VAR=foo script
(foo)

So, for your case you just need to put the variable assignment before the command that is given to rsh. Something like this should work:

Code:
remsh "SOME_VAR=desired_value  remote-cmd-name param1 parm2"

No changes at all are then necessary on the remote side, and allows the value of the variable to change, if needed, with each execution of the process on the local host (host a).
Last edited by agama; 09-04-2010 at 12:38 PM.. Reason: added one more thought.
 

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LEARN ABOUT SUSE

xon

XON(1)							      General Commands Manual							    XON(1)

NAME

       xon - start an X program on a remote machine

SYNOPSIS

       xon remote-host [-access] [-debug] [-name window-name] [-nols] [-screen screen-no] [-user user-name] [command ...]

DESCRIPTION

       Xon runs the specified command (default xterm -ls) on the remote machine using rsh, remsh, or rcmd.  Xon passes the DISPLAY, XAUTHORITY and
       XUSERFILESEARCHPATH environment variables to the remote command.

       When no command is specified, xon runs 'xterm -ls'.  It additionally specifies the application name to be 'xterm-remote-host' and the  win-
       dow title to be '-fIremote-host'.

       Xon  can  only  work  when  the	remote host will allow you to log in without a password, by having an entry in the .rhosts file permitting
       access.

OPTIONS

       Note that the options follow the remote host name (as they do with rlogin).

       -access
	      Runs xhost locally to add the remote host to the host access list in the X server.  This won't work unless xhost is given permission
	      to modify the access list.

       -debug Normally,  xon  disconnects the remote process from stdin, stdout and stderr to eliminate the daemon processes which usually connect
	      them across the network.	Specifying the -debug option leaves them connected so that error messages from the  remote  execution  are
	      sent back to the originating host.

       -name window-name
	      This specifies a different application name and window title for the default command (xterm).

       -nols  Normally xon passes the -ls option to the remote xterm; this option suspends that behaviour.

       -screen screen-no
	      This changes the screen number of the DISPLAY variable passed to the remote command.

       -user user-name
	      By  default, xon simply uses rsh/remsh/rcmd to connect to the remote machine using the same user name as on the local machine.  This
	      option cause xon to specify an alternative user name.  This will not work  unless  you  have  authorization  to  access  the  remote
	      account, by placing an appropriate entry in the remote users .rhosts file.

BUGS

       Xon can get easily confused when the remote-host, user-name or various environment variable values contain white space.

       Xon has no way to send the appropriate X authorization information to the remote host.

X Version 11							   scripts 1.0.1							    XON(1)
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