topic Re: su - user .........No Shell in Operating System - HP-UX

su - user .........No Shell

dattu_1 — Thu, 21 Sep 2006 06:14:06 GMT

Hi guys,
i am getting no shell message when i am doing su - user .The users default shell is called /abc/rgf/rtf.sh.......its shell mentioned in systems passwd file....

and when i run grep zxw /etc/passwd | od -x
i get 00000...what is this....And when i login throgh his id the window gets closed after entering password..........plz help me its urgent...............

Re: su - user .........No Shell

spex — Thu, 21 Sep 2006 06:18:33 GMT

dattu,

The user shell listed in /etc/passwd for must be valid, and must appear in /etc/shells.

PCS

Re: su - user .........No Shell

Jaime Bolanos Rojas. — Thu, 21 Sep 2006 06:22:49 GMT

Dattu,

Those are the shells that you might want to use:

#ll /usr/bin/ksh /usr/bin/sh /usr/bin/csh
-r-xr-xr-x 1 bin bin 155648 Jun 21 2004 /usr/bin/csh
-r-xr-xr-x 2 bin bin 159744 Jul 14 2004 /usr/bin/ksh
-r-xr-xr-x 2 bin bin 204800 Oct 21 2003 /usr/bin/sh

For more information, please refer to this old thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1042841

Regards,

Jaime.

Re: su - user .........No Shell

sudhapage — Thu, 21 Sep 2006 06:23:52 GMT

May you can check with 'pwck' command. It will check and tell what are all the errors you have in /etc/passwd file.

Regards,
Sudhakaran.K

Re: su - user .........No Shell

dattu_1 — Thu, 21 Sep 2006 06:38:37 GMT

hi spex,
Actually i need to access an applicn with help of script /abc/def/Mydef.sh ...And what do u mean by shell is valid or not..please explain.......when the user logs in..he gets an menu....
And reg pwck shows some login directories not found and everything ok.....
grpck gives nothing.........

Re: su - user .........No Shell

spex — Thu, 21 Sep 2006 07:04:57 GMT

dattu,

By valid shell, I mean an actual shell--not a shell script. Furthermore, the shell executable must have appropriate ownership/permissions. Examples of valid shells:

# cat /etc/shells
/usr/bin/csh
/usr/bin/ksh
/usr/bin/sh
/sbin/sh

To force a user to use a front-end program:

1) Make sure the user has a valid shell assigned in /etc/passwd (e.g. /usr/bin/sh).

2) Add a reference to the front-end script to ~user/.profile:
exec abc/rgf/rtf.sh
exit

3) Optionally:
# chown root:root ~user/.profile
so that the user cannot make changes.

'exec' replaces the user's current environment with that of and exits once terminates.

PCS

Re: su - user .........No Shell

Carles Viaplana — Thu, 21 Sep 2006 08:00:39 GMT

Hello,

Check if user has read privileges to .profile and .login files.

Regards,

Carles

Re: su - user .........No Shell

KapilRaj — Thu, 21 Sep 2006 08:59:37 GMT

Give him a valid shell in the /etc/passwd file. If you need to bring up a menu when he logs in, It can be achieved by a .profile or some tweaking in /etc/profile(not recommended)

Regds,

Kaps

But guys, It should work in any case though it is a shell script right ?.

Re: su - user .........No Shell

dattu_1 — Thu, 21 Sep 2006 09:15:12 GMT

Hi guys,
I think my password file is corrupt....B'coz i have ftp'd this file from the server where the backup was kept..now i am planning to create all users agin through script....Let us see.....I will surely let u know the status..........

Re: su - user .........No Shell

spex — Thu, 21 Sep 2006 10:09:37 GMT

Kapil,

Technically, you can set a user's shell to a script, as long as the script is +x and has correct ownership. However, this is not recommended.

PCS

Re: su - user .........No Shell

dattu_1 — Fri, 22 Sep 2006 05:57:03 GMT

Hi spex,
Actually i am able to access the shell when using telnet ..but when i try to login through ssh i am not able 2 login....the window just opens and gets killed immediately...............

Re: su - user .........No Shell

KapilRaj — Fri, 22 Sep 2006 08:51:31 GMT

uhmm that sounds like ssh is not allowing a connection which has a bad shell. Why not try adding (appending) this shell script on /etc/shells and give it a try ?

Regds,

Kaps

Re: su - user .........No Shell

dattu_1 — Fri, 22 Sep 2006 10:26:46 GMT

Hi Kapil,
Actually the scripts entry is already therein /etc/shells......what should be the permission for /etc/shells.......