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Top Forums Shell Programming and Scripting Bash shell adding extra single quotes Post 302670821 by hpodhrad on Thursday 12th of July 2012 01:21:05 PM
Old 07-12-2012
Bash shell adding extra single quotes

AIX 6.1
bash shell

Code:
#!/bin/bash -x
STATEMENT="cvs commit -m \"This is\" ../PBP/EIR.ENTRY"
echo $STATEMENT
exit 0

This is the output
+ STATEMENT='cvs commit -m "This is" ../PBP/EIR.ENTRY'
+ echo cvs commit -m '"This' 'is"' ../PBP/EIR.ENTRY
cvs commit -m "This is" ../PBP/EIR.ENTRY
+ exit 0

Problem: Notice the single quotes between "This" and "is" ... This causes the called program "cvs" to think those are separate parameters which they are not.

If I change the shell to this
Code:
#!/bin/bash -x
STATEMENT="cvs commit -m \"This is\" ../PBP/EIR.ENTRY"
echo $STATEMENT
$STATEMENT
exit 0

Then this is the ouput

+ STATEMENT='cvs commit -m "This is" ../PBP/EIR.ENTRY'
+ echo cvs commit -m '"This' 'is"' ../PBP/EIR.ENTRY
cvs commit -m "This is" ../PBP/EIR.ENTRY
+ cvs commit -m '"This' 'is"' ../PBP/EIR.ENTRY
cvs commit: nothing known about `is"'
cvs [commit aborted]: correct above errors first!
+ exit 0

Please do not pass this off as a "cvs" problem. It is not. If I change the script to this
Code:
#!/bin/bash -x
STATEMENT="cvs commit -m \"Thisis\" ../PBP/EIR.ENTRY"
echo $STATEMENT
$STATEMENT
exit 0

Then this is the output
+ STATEMENT='cvs commit -m "Thisis" ../PBP/EIR.ENTRY'
+ echo cvs commit -m '"Thisis"' ../PBP/EIR.ENTRY
cvs commit -m "Thisis" ../PBP/EIR.ENTRY
+ cvs commit -m '"Thisis"' ../PBP/EIR.ENTRY
+ exit 0

How do I get bash to ignore that space?

Last edited by joeyg; 07-12-2012 at 03:31 PM.. Reason: Please wrap data and sripts with CodeTags
 

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COMMAND-NOT-FOUND(1)					    http://en.opensuse.org/Sco					      COMMAND-NOT-FOUND(1)

NAME
command-not-found - A command-not-found handler SYNOPSIS
command-not-found {binary_name} {repository} ARGUMENTS
The following arguments are required: binary_name The name of binary you are looking for. repository The name of repository for search. For most cases, use zypp DESCRIPTION
command-not-found handler is designed to tell users which package contains a missing command. The handler is integrated to bash(1) and zsh(1) shells and is not necessary to call it directly. Just type a name of the command in your favourite shell and you'll get a result. If you consider c-n-f handler useless, just add unset command_not_found_handle to your profile or remove the command-not-found package. Handler doesn't call the command-not-found binary directly, it only prints info about it. If you want to invoke it automatically, just add export COMMAND_NOT_FOUND_AUTO=1 to your bash profile. EXAMPLE
: NORMAL USAGE For example you want to try blender, because you have heard that is an amazing program. So just type blender in shell: $ blender You get the following output: The program 'blender' can be found in the following package: * blender [ path: /usr/bin/blender, repository: zypp (openSUSE 11.1-0) ] Try installing with: sudo zypper install blender bash: blender: command not found SEE ALSO
scout(1) AUTHOR
Pavol Rusnak <stick@gk2.sk> Developer http://gitorious.org/opensus 08/07/2009 COMMAND-NOT-FOUND(1)
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