Shell Redirect error

[pareshan]

Hi everyone, While I was trying to do

DATE=`date +"%Y%m%d_%H%M%S"`
STARTLOG=$TUXSTDDIR/start_$DATE.log
tmboot -y > $STARTLOG 2>&1



I got an error i.e. Ambiguous output redirect error. Here the first part is to boot the account so there is nothing wrong with that. I have defined the startlog also but I dint understand why I am having problem here.

I dint get what that error means. I will appreciate any help to make this right.

thanks alot

[James R. Ferguson]

Hi:

You're using the evil C-shell. Use a real shell (Poxix, Korn, or Bash). Since this is HP-UX, use the Posix shell --- '/usr/bin/sh'.

See this :

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

Regards!

...JRF...

[pareshan]

I think im using korn shell thought I have both ksh and csh. and i did something like that to be exact
#!/bin/ksh

DATE=`date +"%Y%m%d_%H%M%S"`
STARTLOG=$TUXSTDDIR/start_$DATE.log
tmboot -y > $STARTLOG 2>&1

doesnt that mean im using Korn shell?
and if lets suppose that is on csh how can I do something like that in csh? even complex way is fine just want to know how I can do it.

thanks

[James R. Ferguson]

Hi:

Hmmm, so you did specify Korn (#!/bin/ksh).

I could reproduce your "ambiguous output redirect" thusly:

# cat ./myredir.csh
#!/usr/bin/csh
set STARTLOG=/tmp/something
lvlnboot -y > $STARTLOG 2>&1

...but not with:

# cat ./myredir.ksh
#!/usr/bin/ksh
STARTLOG=/tmp/something
lvlnboot -y > $STARTLOG 2>&1

Regards!

...JRF...

[James R. Ferguson]

Hi (again):

Are you running your script remotely, as with an 'remsh' command?

Regards!

...JRF...

[pareshan]

no im not using remsh or running command remotely.

[James R. Ferguson · Accepted solution]

Hi (again):

If you do:

# su - someuser /myscript

...and 's default shell is the C-shell then regardless of the presence of the Korn shell interpreter line in 'myscript' you will produce the error.

Does this match what you are doing?

Regards!

...JRF...

[Michael Mike Reaser]

Please show us how you're invoking the script. First, issue the command

echo $SHELL

and show us the output. Next, issue the command you're using to invoke this script

myscript parm1 parm2 ... parmN

and show us the output from that.

[pareshan]

No that dint work. Instead of that I guess it will be helpful for me if there is any way to do similar to that in csh so that I can try that one if it works.

tmboot -y > $STARTLOG 2>&1
to me it looks like it should work on korn shell but its not so What im asking is how can we do like that in csh.

[pareshan]

I did the exactly you wanted
> echo $SHELL
/usr/bin/ksh
> set DATE=`date +"%Y%m%d_%H%M%S"`
> set STARTLOG=$TUXSTDDIR/start_$DATE.log
> tmboot -y > $STARTLOG 2>&1
Ambiguous output redirect.
>
here i dont need any parameters and all and I can put this in a file or I can run like this which shouldnt make any difference.