topic Re: remotely execute a process in Operating System - HP-UX

remotely execute a process

Gaoping Yu — Tue, 08 Apr 2003 19:39:51 GMT

I have a process, A, which is been called from another process, B, on the same HP UNIX box (HP-UX 11.0) using execlp commend. Now the process B needs to be moved to a different HP UNIX box running the same operating system. Both processes are written in ANSI C.

My questions are
(1) How to execute A from B (on a different box)?
(2) What settings do I need on both boxes in order to make the remote execution work?

Thanks in advance for your help.

Re: remotely execute a process

Patrick Wallek — Tue, 08 Apr 2003 19:48:20 GMT

Although they are generally seen as a security risk, you can use the 'r*' commands to do this. 'rexec' or 'remsh' may a good alternative for you. For this to work you must have either an /etc/hosts.equiv file or an .rhosts in the users home directory on the remote machine set up.

See 'man rexec', 'man remsh' and 'man rhosts' for more information.

Re: remotely execute a process

Ramkumar Devanathan — Tue, 08 Apr 2003 19:53:29 GMT

Yu,
use remsh ("/usr/bin/remsh") and pass the commandss to be run as arguments.

say if you wish to run "cat /tmp" on a remote node, run as follows -

"remsh" " cat /tmp"

....... ...............
binary arguments

use remsh with -l option to specify the userid with which to login as, instead of as current user id of the executing process.

for this, the files /etc/hosts.equiv need to be populated with details of equivalent users on both machines.

see man rhosts for more info.

Should work - i have never tried it out anyhow.

- ramd.

Re: remotely execute a process

Dario_1 — Tue, 08 Apr 2003 20:05:59 GMT

You can use remsh to do that. Do a man remsh for more details. In order to use remsh, you must have an /etc/hosts.equiv file OR an .rhosts in the home directory of the user on the remote server.

Regards,

DR

Re: remotely execute a process

Wilfred Chau_1 — Tue, 08 Apr 2003 20:17:04 GMT

config .rhosts on host A
# vi
# add "B " (without quote)

then on the system B, logon as user B

remsh A -l ls /tmp

Re: remotely execute a process

Rory R Hammond — Thu, 10 Apr 2003 14:09:00 GMT

ssh has features like remote shell but is much more secure.

Rory