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Full Discussion: Script to tar/rsync/rm multiple folder names
Top Forums Shell Programming and Scripting Script to tar/rsync/rm multiple folder names Post 302971705 by Don Cragun on Sunday 24th of April 2016 05:55:18 PM
Old 04-24-2016
Quote:
Originally Posted by robertkwild
so am i right in thinking -

Code:
tar -cf "$DIR".tar "$DIR"
if [ $? -ne 0 ]
then
mail -s "tar failed $DIR" $MailAddress <<< "creating of tar $DIR failed due to error, removing $DIR.tar"
rm -f "$DIR".tar
continue
fi

is the same as this -

Code:
if tar -cf "$DIR".tar "$DIR" ; else
mail -s "tar failed $DIR" $MailAddress <<< "creating of tar $DIR failed due to error, removing $DIR.tar"
rm -f "$DIR".tar
continue
fi

as you said then is equal to 0 and else is not equal to 0?

many thanks

rob
No! You can't have an if statement without a then clause. But, you can do it as I suggested back in post #16 in this thread:
Code:
	if ! tar cf "${DIR}".tar "${DIR}"
	then	mail -s "tar failed $DIR" $MailAddress <<< "creating of tar $DIR failed due to error, removing $DIR.tar"
		rm -f "$DIR".tar
		continue
	fi

Note the exclamation point in red in the if statement. That reverses the exit status of the given command (tar in this case) so that if the command fails (exits with a non-zero exit status) it will execute the then clause and if the command succeeds (i.e., exits with zero exit status) it will execute the else clause if there is one.
 

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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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