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Full Discussion: Redirection or piping error message
Top Forums Shell Programming and Scripting Redirection or piping error message Post 70981 by mariner on Friday 6th of May 2005 05:26:18 AM
Old 05-06-2005
Redirection or piping error message
I have written a script that appears to work correctly in testing, but is coming up with a starnge error message,

script_name[187]: test: 0403-004 Specify a parameter with this command.

Redirection or piping of stdin or stdout is allowed only with -b. (156).

The script is run by different functions being called as seen below and the bit it seems to not like is marked in bold.

setup_environment

if [ -s ${shame_list} ]
then
rm ${shame_list}
fi

already_logged_in

if [ ${rejection} = yes ]
then
shame_on_you < $shame_list
fi
logon

A brief run down of the script is that it sets up all the environment variables, them checks to see whether there is a shame_list file and removes it, creates a list of who is logged on, then tries to import this list into a function which pulls out selected in formation.

Can anyone shed any light on why the error message is coming up as it has stumped me?
 

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LEARN ABOUT CENTOS

checkbashisms

CHECKBASHISMS(1)					      General Commands Manual						  CHECKBASHISMS(1)

NAME

       checkbashisms - check for bashisms in /bin/sh scripts

SYNOPSIS

       checkbashisms script ...
       checkbashisms --help|--version

DESCRIPTION

       checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
       of bashisms.  It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.

       Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported  by  POSIX";
       this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.

       In  cases  where  POSIX	and  Debian  Policy  disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
       options for stricter checking.

OPTIONS

       --help, -h
	      Show a summary of options.

       --newline, -n
	      Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)

       --posix, -p
	      Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).

       --force, -f
	      Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
	      to be a shell wrapper).

       --extra, -x
	      Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
	      tive which may be ignored.  For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.

       --version, -v
	      Show version and copyright information.

EXIT VALUES

       The exit value will be 0 if no possible bashisms or other problems were detected.  Otherwise it will be the sum of the following error val-
       ues:

       1      A possible bashism was detected.

       2      A file was skipped for some reason, for example, because it was unreadable or not found.	The warning message will give details.

SEE ALSO

       lintian(1).

AUTHOR

       checkbashisms  was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
       Julian Gilbey <jdg@debian.org>.

DEBIAN
								 Debian Utilities						  CHECKBASHISMS(1)
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