topic Re: Restricted Shell in Operating System - HP-UX

Restricted Shell

mvr — Wed, 20 Aug 2003 11:09:25 GMT

Hello,

I would like to lock users in their home directory. I'm confused with the rsh command. Is the rsh command restricted shell command or remote shell command ?
When I put rsh in my passwd file, user cannot login at all.
In redhat 9.0 I don't have krsh command. Please let me know what would be the correct way to configure the existing users.

Thank you,
Miro

Re: Restricted Shell

Pete Randall — Wed, 20 Aug 2003 11:13:39 GMT

Miro,

From man sh:

rsh Restricted version of the POSIX or Bourne shell command
interpreter. Sets up a login name and execution
environment whose capabilities are more controlled
(restricted) than normal user shells.

Pete

Re: Restricted Shell

James R. Ferguson — Wed, 20 Aug 2003 11:25:00 GMT

Hi Miro:

If you have an 'etc/shells' file, be sure to include the restricted shell you want to use in it. If you do *not* have '/etc/shells', then by default, the following shells are valid:

/sbin/sh
/usr/bin/sh
/usr/bin/rsh
/usr/bin/ksh
/usr/bin/rksh
/usr/bin/csh
/usr/bin/keysh

Note that the "restricted" shell versions begin with "r". You transposed "rkrsh" to "krsh".

As for the "remote shell" command, that's 'remsh'. See its man pages for more information.

Regards!

...JRF...

Re: Restricted Shell

Steve Steel — Wed, 20 Aug 2003 11:28:24 GMT

Hi

See

http://www.docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90046/B2355-90046_top.html&con=/hpux/onlinedocs/B2355-90046/00/00/8-con.html&toc=/hpux/onlinedocs/B2355-90046/00/00/8-toc.html&searchterms=rsh&queryid=20030820-062654

This is part of an online doc which explains everything

Steve Steel

Re: Restricted Shell

Umapathy S — Wed, 20 Aug 2003 11:30:32 GMT

Miro,
Adding some more.

In Linux/RH9 rsh stands for Remote shells. In hpux rsh stands for restricted shell. rsh in RH9 is bash based.

HTH,
Umapathy

Re: Restricted Shell

mvr — Wed, 20 Aug 2003 11:42:20 GMT

Could be the part of a problem that I'm using SSH client to log in (putty) ? Now when I added /usr/bin/rsh in to /etc/shells, after typing the user name and password, my screnn jut go away (it closes it self).

Miro

Re: Restricted Shell

mvr — Wed, 20 Aug 2003 11:47:56 GMT

Umapathy,

Thank you, now I now that I was not going crazy!
So what would be the correct way to do this?
Do I put bash -r in a /etc/passwd file?

Miro

Re: Restricted Shell

Umapathy S — Wed, 20 Aug 2003 11:58:45 GMT

Miro,
yes, you need to put /bin/bash -r in /etc/passwd.
But the shell is highly restricted. Consult the RESTRICTED SHELL section of man pages for more info on your requirements.

HTH,
Umapathy