TCSH and CSH commands

[GaneshrajS]

Hi,

Will you please help me in converting the following commands to TCSH and CSH commands?

commands:-
tty > $1/.ttyvalue
ps -ef | grep $1 | tr -s ' ' | cut -d ' ' -f3 > $1/.processvalue
while :
do
sleep 10
done

Thanks,
Ganeshraj.S

[Dennis Handly]

You don't. You leave them in a real shell:

#!/usr/bin/ksh
tty > $1/.ttyvalue
ps -ef | grep $1 | tr -s ' ' | cut -d ' ' -f3 > $1/.processvalue
while : ; do # Not sure why you want this infinite loop here?
sleep 10
done

And from your scummy C shell:
call_real_shell_for_something user-name

[OldSchool]

i've not looked at csh in years, but 5 minutes with the "man" page seems to indicate that the only difference would be the "while" construct.

must admit, I'm at a loss as to what you would do with this infinite loop, as the loop doesn't actually "do" anything, so it seems rather pointless

[GaneshrajS]

Hi,
Thanks for your replies. :)
I need to make sure these commands executes in TCSH and CSH shell.

Is that including(at 1st line) #!/usr/bin/tcsh will work for tcsh and #!usr/bin/csh will work for csh?

-Kindly dont worry about the infinite loop. We will take care of it. :)

Since I never worked on these shells, I need assistance.

-Ganeshraj.S

[James R. Ferguson]

Hi:

> I need to make sure these commands executes in TCSH and CSH shell.

Why not simply test your scripts?

> Is that including(at 1st line) #!/usr/bin/tcsh will work for tcsh and #!usr/bin/csh will work for csh?

Yes, all scripts should specify the interpreter that they want to use. This is done with the 'shebang' line. For the HP-UX Posix shell this is:

#!/usr/bin/sh

> Since I never worked on these shells, I need assistance.

I have never used the 'tcsh' but I understand it is quite viable if that is your choice. The 'csh' is brain-damaged and should be avoided:

http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/

Whatever you elect to do, do _NOT_ change 'root's shell. It must remain as '/sbin/sh' [ a staticly linked version of the Posix shell ] or your server will be rendered un-startable!

Regards!

...JRF...

[OldSchool]

Me: "but 5 minutes with the "man" page seems to indicate that the only difference would be the "while" construct."

GaneshrajS: "Since I never worked on these shells, I need assistance."

Then you might start by looking at the aforementioned "man" page, in particular the item noted.