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Full Discussion: Check for strings
Top Forums Shell Programming and Scripting Check for strings Post 302830545 by munna_dude on Tuesday 9th of July 2013 05:24:11 AM
Old 07-09-2013
Check for strings

Hi,

Please let me know, why the below code is not going to "elif" part.

Code:
#! /bin/bash
string1=""
string2="Hello"

echo "string1=$string1"
echo "string2=$string2"
# condition check for nfs and snfs
if [ -n $string1 ]; then
    value=$string1
echo "**************string1=$string1"
elif [ -n $string2 ]; then
    value=$string2
echo "**************string2=$string2"
else
    return 0
fi

output:
Code:
# sh one.sh
string1=
string2=Hello
**************string1=

 

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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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