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Top Forums Shell Programming and Scripting I need the improvement for my script Post 302904200 by Don Cragun on Monday 2nd of June 2014 07:10:15 PM
Old 06-02-2014
There are several problems here...

Is this a homework assignment? If it is, please fill out the complete homework template and refile your request in the Homework & Coursework Questions forum.

If not, what type of file is /opt? (The grep utility isn't intended to work on directories.) If it is a regular file, what is in it?

What does the program email do on your system when given the operand id? How does the value of the variables var1 and var2 in the environment affect its behavior?

What is in the file tmp1 when you run your script each of the first three times?

What is the "right output" for each of the 1st three times when you run this script?

What operating system are you using?

What diagnostics did your script produce each of the 1st three times you ran it?
 

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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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