topic Re: The shell in Operating System - HP-UX

The shell

Namit — Thu, 03 Oct 2002 18:22:28 GMT

Please forgive my ignorance, but I'm getting a strange problem.

When I do echo $SHELL ( or do a ps ) I see a csh, but still the environments set in the '.cshrc' don't work. Then, when I do csh, I can see my environment set ( probably the .cshrc isn't read when I first login, and is read only when I do a csh )

What is going wrong here ?

Re: The shell

Jeff Schussele — Thu, 03 Oct 2002 18:38:20 GMT

Hi Namit,

Few things to check:

1) Make sure that csh is your defined shell in the passwd file & that the path to csh is correct - /usr/bin/csh

2) Check permissions on your home dir - should be owned by you & the group should be your primary group

3) Check the ownership & perms on the .cshrc file itself - should be 444

HTH,
Jeff

Re: The shell

Ted Ellis_2 — Thu, 03 Oct 2002 18:42:21 GMT

take a look at the password file and see what shell is set for that user... it will be the last item on the line for this user.

is it /usr/bin/csh? or another shell

also check /etc/profile, /.login and .profile and look for any forced entries resetting the SHELL.

If the .login and .profile is clear and /etc/passwd has /usr/bin/csh, you should be ok. Update the passwd file if necessary to show /usr/bin/csh.

Ted

Re: The shell

Darrell Allen — Thu, 03 Oct 2002 18:53:29 GMT

Hi,

As others say, verify the shell specified for you in /etc/passwd.

If if is csh, check to see if you have something in .cshrc or .login in your home directory that switches you to a different shell. It could be something like:
exec /usr/bin/sh

Darrell

Re: The shell

Leif Halvarsson_2 — Thu, 03 Oct 2002 19:14:33 GMT

Hi
Are you running CDE. If so, try with uncommenting the line:

#DTSOURCEPROFILE=true
in the file <$HOME>/.dtprofile

Re: The shell

Namit — Thu, 03 Oct 2002 19:36:57 GMT

Thanks for the help guys, but I've checked the .login and .cshrc files, and there's nothing about SHELL. Even the passwd file is fine.

I changed the group to primary, that didn't help.

What I want to know is, if I see csh when I do a ps, doesn't that always mean that I am running a cshell ? SHELL might have been changes, but ps should tell me the current shell running, right ?

Re: The shell

Ted Ellis_2 — Thu, 03 Oct 2002 19:48:18 GMT

running ps will show the processes associated with the current terminal, so csh would indicate that the terminal you are on is running a csh.

Did you note one of the later entries? Are you logging in via CDE? Or xterm/telnet?

Re: The shell

Martin Johnson — Thu, 03 Oct 2002 19:50:30 GMT

Yes, it should show you the shell you are running but it doesn't necessarily tell you the path of the shell (you may have more than one copy of a shell).

How are you logging into the system? Depending upon how you are logging into the system, .cshrc may or may not be executed. For example, logging in through CDE will not execute .cshrc unless you change .dtprofile.

HTH
Marty

Re: The shell

Ted Ellis_2 — Thu, 03 Oct 2002 19:51:24 GMT

also.. instead of looking for SHELL in the target files mentioned.. just check for csh

curious to see if maybe /usr/bin/csh... possibly with the -f option may be tucked in their somewhere...

Ted

Re: The shell

Namit — Thu, 03 Oct 2002 19:51:58 GMT

Yeah, in CDE, I've to telnet to that machine. And in fact, I don't see this problem on my own machine.

Can this solve the issue ?

BTW I did try uncommenting, but that didn't help, and $HOME/.dt/startlog also doesn't report any problem ( as suggested in .dtprofile )

Re: The shell

Darrell Allen — Thu, 03 Oct 2002 19:53:36 GMT

Yes, ps will show the shell you are running. Consider the following:

$ echo $SHELL
/usr/bin/sh
$ csh
% echo $SHELL
/usr/bin/sh
% ps -f
UID PID PPID C STIME TTY TIME COMMAND
darrell 15130 219 0 16:49:07 pts/3 0:00 csh
darrell 219 213 0 Sep 27 pts/3 0:00 -sh
darrell 15131 15130 5 16:49:11 pts/3 0:00 ps -f
% echo $$
15130
%

My login shell is a posix shell. After echo $SHELL, I switched to csh. Notice $SHELL did not change. "ps -f" shows both csh and sh but you can see that sh is the parent process for the csh.

So to answer your question, yes, if you see csh you are running a cshell. It may not be your current shell though. To see which is your current shell, "echo $$" and match it to the ps output. From above, you see the current shell is 15130, the csh process.

Darrell

Re: The shell

Namit — Thu, 03 Oct 2002 19:56:51 GMT

So Allen, On echo $$ I get 2852 as my PID, which is for csh

Re: The shell

Namit — Thu, 03 Oct 2002 19:58:27 GMT

And Martin,

I do a telnet or rlogin from my dtterm or xterm ( since this is not my primary machine ). What do I need to do to see if .cshrc is run or not ?

Re: The shell

Ted Ellis_2 — Thu, 03 Oct 2002 20:00:28 GMT

how about inserting a line to maybe read the /etc/motd... insert something that will make it obvious the .cshrc is being parsed... echo a string of some sort...

Re: The shell

Darrell Allen — Thu, 03 Oct 2002 20:02:23 GMT

Well, it appears your current shell is csh.

Did you try Leif's suggestion? It was to uncomment the line:

#DTSOURCEPROFILE=true
in the file <$HOME>/.dtprofile

I don't remember if you need to close your CDE session and restart it.

Darrell

Re: The shell

Namit — Thu, 03 Oct 2002 20:04:43 GMT

I mean, I know .cshrc is not run the first time ( unless I do a csh ) since if I echo the PATH, this doesn't include the ones I set in .cshrc, only after a csh do I get to see those paths.

Re: The shell

Darrell Allen — Thu, 03 Oct 2002 20:06:56 GMT

I think I mis-read your comments above. You run CDE, open a telnet session to a remote system where you experience this problem. If so, I don't believe DTSOURCPROFILE is going to help.

Darrell

Re: The shell

Darrell Allen — Thu, 03 Oct 2002 20:07:39 GMT

To see if .cshrc is being executed, simply add a line to it that says "echo This is .cshrc".

You can also put a line in .login to see if it's being executed.

Darrell

Re: The shell

Namit — Thu, 03 Oct 2002 20:10:28 GMT

inondation de l'information
( Flood of information )

... for my little brain today :-)

Anyway, Allen I restarted CDE as well, but in vain :-(

Re: The shell

Namit — Thu, 03 Oct 2002 20:16:56 GMT

Now you guys would solve this problem I guess. This must be some silly problem now.

I found that actually .cshrc is running the first time also. If I do echo for other variables, or do echo "Hello World" in .cshrc, that works. The problem is only with PATH.

# ClearCase paths
setenv PATH /usr/atria/bin:$PATH

setenv CLEARCASE_BLD_UMASK 2

echo PATH doesn't show me the new path, but echo CLEARCASE... does show me 2 !