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Top Forums Shell Programming and Scripting Interpreting Logicals/Environment Variables using the read command Post 302320196 by kingpin2502 on Wednesday 27th of May 2009 09:58:35 AM
Old 05-27-2009
Interpreting Logicals/Environment Variables using the read command

Hi All

I have something that from the outset seems really trivial but in practice is not quite working.

I have the following code sample in my shell script which illustrates the problem

Code:
echo "enter home directory"
read home
mkdir $home/newdir

The user then enters a logical $HOME in the prompt. This is what is displayed on the screen

Code:
enter home directory
$HOME
mkdir: cannot create directory `$HOME/newdir': No such file or directory

If I type the full name into the prompt, it works fine. But this isn't ideal as in the real script, the directory structure could be 10 directories deep. Typing the full path could lead to potential issues.

Is there some way for the read command to interpret environment variables?

Thanks
 

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gnomevfs-mkdir(1)						   User Commands						 gnomevfs-mkdir(1)

NAME
gnomevfs-mkdir - make a new directory at a VFS location SYNOPSIS
gnomevfs-mkdir URI DESCRIPTION
gnomevfs-mkdir makes a new directory at a URI location that supports the creation of new directories. OPERANDS
The following operands are supported: URI Specifies the location of the new directory in standard URI format. EXAMPLES
Example 1: Making a New Directory in the Home Directory example% gnomevfs-mkdir file:///home/user/newdir ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables: NLSPATH. EXIT STATUS
The exit value 0 is returned regardless of success or failure. FILES
The following files are used by this application: /usr/bin/gnomevfs-mkdir Executable to make a new directory at a VFS location ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgnome-vfs | +-----------------------------+-----------------------------+ |Interface stability |External | +-----------------------------+-----------------------------+ SEE ALSO
gnomevfs-cat(1), gnomevfs-copy(1), gnomevfs-info(1), gnomevfs-ls(1) NOTES
Written by Stephen Browne, Sun Microsystems Inc., 2004. SunOS 5.10 6 Sep 2004 gnomevfs-mkdir(1)
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