lost standart input after su - <user>


 
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Operating Systems HP-UX lost standart input after su - <user>
# 1  
Old 06-14-2006
lost standart input after su - <user>

All,
hope somebody can help here:

wrote a small shell script running under root on //usr/bin/ksh
no specialisties in the profile.
Then the test script:
-------------------------------------------
echo "Now we start, press any key..."
read
su - test -c "id | wc -l" 2>/tmp/x
echo "DONE!!!"
read

--------------------------------------------
This script hangs after "echo DONE!!!"
I have to kill the shell to proceed. It works with:


-------------------------------------------
echo "Now we start, press any key..."
read
su - test -c "id" 2>/tmp/x
echo "DONE!!!"
read

--------------------------------------------

The pipe seems the problem. I the file /tmp/x I get then "Not a terminal"
the user "test" uses /usr/bin/ksh
Extract from /etc/passwd:
test:xxxxxxxxxx:105:20:,,,:/home/test:/usr/bin/ksh
Also a blank profile.

Can somebody verify / help?

Would be greatly appreceated.

Thanks
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SHCOMP(1)						    User Environment Utilities							 SHCOMP(1)

NAME
shcomp - compile a ksh93 shell script SYNOPSIS
shcomp [ options ] [infile] [outfile]] ORIGIN OF THIS MAN PAGE
This man page was written by Christophe Martin <Schplurtz@free.fr> for the Debian GNU/Linux system. It is based on "shcomp --man" output. DESCRIPTION
Unless -D is specified, shcomp takes a shell script, infile, and creates a binary format file, outfile, that ksh93 can read and execute with the same effect as the original script. Since aliases are processed as the script is read, alias definitions whose value requires variable expansion will not work correctly. If -D is specified, all double quoted strings that are preceded by $ are output. These are the messages that need to be translated to locale specific versions for internationalization. If outfile is omitted, then the results will be written to standard output. If infile is also omitted, the shell script will be read from standard input. OPTIONS
-D, --dictionary Generate a list of strings that need to be placed in a message catalog for internationalization. -n, --noexec Displays warning messages for obsolete or non-conforming constructs. -v, --verbose Displays input from infile onto standard error as it reads it. --man Displays this man page on standard error and exits. --help Shows a short help message and exits. EXIT STATUS
0 Successful completion. >0 An error occurred. DEBIAN WARNING
On a Debian GNU/Linux system, more than one package may provide ksh. the output of shcomp can only be used by ksh93. Any other ksh will be unable to run the compiled script. EXAMPLE
( echo '#! /bin/ksh93' ; shcomp myscript ) > myscript.bin && chmod 755 myscript.bin ./myscript.bin SEE ALSO
ksh(1) IMPLEMENTATION
version shcomp (AT&T Labs Research) 2012-02-29 author David Korn <dgk@research.att.com> copyright Copyright (c) 1982-2012 AT&T Intellectual Property license http://www.eclipse.org/org/documents/epl-v10.html KSH93 Fri Jun 3 2005 SHCOMP(1)