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Top Forums Shell Programming and Scripting Chunks of bash shell programming Post 302852471 by lg123 on Wednesday 11th of September 2013 03:57:55 PM
Old 09-11-2013
Thanks. I do not have a way to try those codes. In the office, I do not want to try it out in production box. In my personal laptop, I do not even have unix. But with whatever little knowledge I have, I can say that

1. var1="asdf"

2. echo "${var1}2"

3. echo "$var12"

1. will work because we are just assigning some characters to a variable named var1.
2. will work. It will give the result as asdf2.
3. will not work as there is no such variable named var12.

I hope you did not give these codes to show that I don't know anything about shell scripting. Though I myself admit that I know nothing about shell scripting. But I would like to learn it quite fast !

Last edited by Scott; 09-22-2013 at 01:19 AM.. Reason: Code tags
 

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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
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