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Full Discussion: Unable to swap values
Top Forums Shell Programming and Scripting Unable to swap values Post 302907804 by SriniShoo on Tuesday 1st of July 2014 11:18:58 PM
Old 07-02-2014
surround the variable names with curley braces
Code:
if [[ "${pwd}" == "${pwd2}" ]]
then
echo both are same
else
temp_pwd=${pwd2}
pwd2=${pwd}
pwd=${temp_pwd}
echo ------------------
echo the value is pwd is ${pwd}
echo the value is pwd2 is ${pwd2}
echo the value is temp_pwd is ${temp_pwd}
fi

 

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PWD(1)							    BSD General Commands Manual 						    PWD(1)

NAME
pwd -- return working directory name SYNOPSIS
pwd [-LP] DESCRIPTION
pwd writes the absolute pathname of the current working directory to the standard output. The following options are available: -L If the PWD environment variable is an absolute pathname that contains neither "/./" nor "/../" and references the current directory, then PWD is assumed to be the name of the current directory. -P Print the physical path to the current working directory, with symbolic links in the path resolved. The default for the pwd command is -P. pwd is usually provided as a shell builtin (which may have a different default). EXIT STATUS
The pwd utility exits 0 on success, and >0 if an error occurs. SEE ALSO
cd(1), csh(1), ksh(1), sh(1), getcwd(3) STANDARDS
The pwd utility is expected to be conforming to IEEE Std 1003.1 (``POSIX.1''), except that the default is -P not -L. BUGS
In csh(1) the command dirs is always faster (although it can give a different answer in the rare case that the current directory or a con- taining directory was moved after the shell descended into it). pwd -L relies on the file system having unique inode numbers. If this is not true (e.g., on FAT file systems) then pwd -L may fail to detect that PWD is incorrect. BSD
October 30, 2003 BSD
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