topic Re: trace in csh in Operating System - HP-UX

trace in csh

Jose_C_Moraes — Tue, 27 Jan 2009 15:35:46 GMT

Hi, I need help.

Does anyone know if there is a similar csh command similar to the sh trace command set -x?

TIA, regards
Jose

Re: trace in csh

James R. Ferguson — Tue, 27 Jan 2009 15:50:52 GMT

Hi Jose:

Yes, you have this one and others for tracing:

http://docs.hp.com/en/B2355-60130/csh.1.html

Of course, use 'csh' at your own risk :-)

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

Regards!

...JRF...

Re: trace in csh

Jose_C_Moraes — Tue, 27 Jan 2009 16:00:06 GMT

Thanks for your reply.

It is not a choice using csh, but SAP's option.

I have alredy looked at faqs.org, but did not find anything.

In the man too. Could you, please, pinpoint the command or the question ?

Regards
Jose

Re: trace in csh

James R. Ferguson — Tue, 27 Jan 2009 16:17:47 GMT

Hi (again) Jose:

Add the '-x' to your shell interpreter (shebang) line, like this:

#!/usr/bin/csh -x

Regards!

...JRF...

Re: trace in csh

Jose_C_Moraes — Tue, 27 Jan 2009 16:43:33 GMT

Thanks, James.

But there is no way to trace just a few lines in a script, like set -x and set +x in posix ?

Regards
Jose

Re: trace in csh

OldSchool — Tue, 27 Jan 2009 17:20:35 GMT

from the "man" page regarding "builtin variables"

"echo"
This variable is set by the -x command line option. If set, all built-in commands and their arguments are echoed to the standard output device just before being executed. Built-in commands are echoed before command and file name substitution, since these substitutions are then done selectively. For non-built-in commands, all expansions occur before echoing."

i believe that "setenv echo..." and "unset echo" may get you what you want

Re: trace in csh

Steven Schweda — Tue, 27 Jan 2009 17:43:01 GMT

> i believe that "setenv echo..." [...]

Wouldn't you think that "setenv" is a bit of
overkill for something which only this shell
cares about? "man csh" suggests that
something like:
set echo = 1
or:
set verbose = 1 # For "-v"
would work.

One easy way to find out...

Re: trace in csh

Peter Nikitka — Tue, 27 Jan 2009 18:09:00 GMT

Hi,

don't use 'setenv echo' - do it like this:

...
set echo
...
foreach var (a b c)
echo $var
end
...
unset echo
...

This will trace only the lines between the 'set echo' and 'unset echo'.

mfG Peter

Re: trace in csh

Armin Kunaschik — Wed, 28 Jan 2009 09:21:30 GMT

If SAP uses csh (BTW: for the login shell only) this should not prevent you from using ksh for your scripts. In fact, if you use the standard installation procedure, all profiles are created as (k)sh and csh versions. Look for any .??*env* in SIDadm's home! Just make sure your script starts with "#!/usr/bin/ksh" and are executable, source the according env file and everything will work fine.

On the other hand, if you want to trace/debug an existing script, you have no choice.

My 2 cents,
Armin

Re: trace in csh

Jose_C_Moraes — Wed, 28 Jan 2009 13:38:55 GMT

Sorry, I am out of town, will be back tomorrow to do the tests

Regards
Jose

Re: trace in csh

Jose_C_Moraes — Thu, 29 Jan 2009 12:47:51 GMT

Hi Armin

It is only the login shell. All of the others are posix shell.

Regards
Jose

Re: trace in csh

Jose_C_Moraes — Thu, 29 Jan 2009 12:49:07 GMT

The suggested trace works fine.

Thanks you all for the help.

Regards
Jose