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Full Discussion: Bash shell - Check if value is valid directory.
Homework and Emergencies Homework & Coursework Questions Bash shell - Check if value is valid directory. Post 302573482 by Corona688 on Monday 14th of November 2011 05:11:20 PM
Old 11-14-2011
You're almost there.

Code:
elif [ "$DIR" != -d ]

This checks if the string "$DIR" is the same as the string "-d", which of course it isn't.

You had it right in the last statement, with [ ! -d "$DIR" ]. That causes an error if "$DIR" isn't a dir or it doesn't exist.

So you really have it covered with the first two. Just chop out all of this:
Code:
elif [ "$DIR" != -d ]
then
        echo "Not a Directory"
        exit 5

and you'll be okay.

---------- Post updated at 04:11 PM ---------- Previous update was at 04:10 PM ----------

Oh, and if they insist you check if it exists or not seperately, check with [ ! -e "$DIR" ] before you check with -d.
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apple_dump

APPLE_DUMP(1)							   Netatalk 2.2 						     APPLE_DUMP(1)

NAME

       apple_dump - Dump AppleSingle/AppleDouble format file

SYNOPSIS

       apple_dump [-a] FILE | DIR
							  apple_dump -f FILE
							  apple_dump -d FILE
							  apple_dump -h | -help | --help
							  apple_dump -v | -version | --version

DESCRIPTION

       apple_dump dump AppleSingle/AppleDouble format file.

OPTIONS

       -a FILE|DIR
	   This is default. Dump a AppleSingle/AppleDouble file for FILE or DIR automatically. Extrapolate FinderInfo type from absolute path. If
	   FILE is not AppleSingle/AppleDouble format, look for .AppleDouble/FILE and ._FILE. If DIR, look for DIR/.AppleDouble/.Parent and ._DIR.

       -f FILE
	   Dump FILE. Assume FinderInfo to be FileInfo.

       -d FILE
	   Dump FILE. Assume FinderInfo to be DirInfo.

       -h, -help, --help
	   Display the help and exit

       -v, -version, --version
	   Show version and exit

NOTE

       There is no way to detect whether FinderInfo is FileInfo or DirInfo. By default, apple_dump examins whether file or directory, a parent
       directory is .AppleDouble, filename is ._*, filename is .Parent, and so on.

       If setting option -f or -d, assume FinderInfo and doesn't look for another file.

SEE ALSO

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Netatalk 2.2							    02 Sep 2011 						     APPLE_DUMP(1)
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