Sponsored Content
Full Discussion: shopt -s nullglob
Top Forums Shell Programming and Scripting shopt -s nullglob Post 302254645 by cfajohnson on Tuesday 4th of November 2008 10:34:57 PM
Old 11-04-2008
Quote:
Originally Posted by msb65
Hi cfajohnson,

- I appreciate the response. Could you please expand on your statement that shopt -s nullglob is not standard? What do you mean exactly?

It only works in bash.
Quote:
- Also, is the purpose of the code that you have written inside the for loop to eliminate the error message that occurs when one of the patterns is not matched?

Exactly. It acheives the same effect as shopt -s nullglob, but will work in all Bourne-type shells.
 

3 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash 'shopt' doubt

Hi, I am using bash shell's extended pattern matching. What tweak the following code needs in order to get the expected output? shopt -s extglob f="a@b@_c@d@_e" echo "${f/@(@|@_)/__}" My expected output is: a__b__c__d__e but the actual output is: a__b@_c@d@_e # that is, how to... (3 Replies)
Discussion started by: royalibrahim
3 Replies

2. Shell Programming and Scripting

Bash, Bourne, and nullglob

I have a script that start out with this: #!/sbin/sh Several things run. However I cannot get: shopt -s nullglob to run in Bourne. I get: shopt: not found So within the main script (after #!/sbin/sh at the top) I start bash with: bash and try to run what I need with: shopt -s... (2 Replies)
Discussion started by: crowman
2 Replies

3. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies
ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
All times are GMT -4. The time now is 02:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy