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Shell Programming and Scripting
error while using export command
Post 302256957 by zaxxon on Tuesday 11th of November 2008 01:06:19 AM
11-11-2008
UID and PWD are system variables which stand for "UserID" and "Print Working Directory"; you should pick definetly other names for your custom variables. Very unlucky pick 
Do an echo on them in your shell and see what is assigned to them currently. UID will have the uid of your current user and is a read only variable.
PWD can be changed, but if you do so, any output like maybe in the prompt/PS1 will be messed up then.
Do an echo on them in your shell and see what is assigned to them currently. UID will have the uid of your current user and is a read only variable.
PWD can be changed, but if you do so, any output like maybe in the prompt/PS1 will be messed up then.
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LEARN ABOUT OPENDARWIN
pwd
PWD(1) BSD General Commands Manual PWD(1) NAME
pwd -- return working directory name SYNOPSIS
pwd [-LP] DESCRIPTION
The pwd utility writes the absolute pathname of the current working directory to the standard output. Some shells may provide a builtin pwd command which is similar or identical to this utility. Consult the builtin(1) manual page. The options are as follows: -L Display the logical current working directory. -P Display the physical current working directory (all symbolic links resolved). If no options are specified, the -P option is assumed. ENVIRONMENT
Environment variables used by pwd: PWD Logical current working directory. DIAGNOSTICS
The pwd utility exits 0 on success, and >0 if an error occurs. STANDARDS
The pwd utility conforms to IEEE Std 1003.1-2001 (``POSIX.1''). SEE ALSO
builtin(1), cd(1), csh(1), sh(1), getcwd(3) BUGS
In csh(1) the command dirs is always faster because it is built into that shell. However, it can give a different answer in the rare case that the current directory or a containing directory was moved after the shell descended into it. The -L option does not work unless the PWD environment variable is exported by the shell. BSD
February 4, 2002 BSD