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- #!/bin/sh
- #
- # tgz [destination [source...] ]
- #
- # Make a gzip'd tar archive $1 (or stdout) out of specified files
- # (or, if not specified, from everything in the current directory)
- #
- # Requires gzip in the user's path.
- #
- # Requires gnu tar (or something close) in the user's path
- # due to use of --exclude, --totals and -S.
- #
- # 1994/02/19 DCN Created
- # 1994/12/01 DCN Cleanup and major improvements
- #
- # Copyright (C) 1994 David C. Niemi (niemi@tuxers.net)
- # The author requires that any copies or derived works include this
- # copyright notice; no other restrictions are placed on its use.
- #
-
- set -e
- set -u
-
- Error ()
- { echo "Error: $0: ${@-}." >&2
- exit 1
- }
-
- if [ $# = 0 ]; then
- dest=
- src=.
- tar cvf - . | gzip -9v
- exit 0
- elif [ $# = 1 ]; then
- dest=$1
- src=.
- else
- dest=$1
- shift
- src="${@-}"
- fi
-
- case $dest in
- "" | . | .. | */ | */. | */.. )
- echo "Usage: $0: [destination [source...] ]" >&2
- exit 1
- ;;
- *.t?z | *.?z | *.z | *.Z | *.tz | *.tz? )
- ;;
- *)
- dest=${dest}.tgz ## Add on .tgz as default suffix
- esac
-
- if [ -h "$dest" ]; then
- Error "Destination file \"$dest\" already exists as a symbolic link"
- elif [ -f "$dest" ]; then
- Error "Destination \"$dest\" already exists as a file"
- elif [ -d "$dest" ]; then
- Error "Destination \"$dest\" already exists as a directory"
- fi
- if [ -z "$dest" -o "X$dest" = 'X-' ]; then
- echo "Writing gzipp'd tar archive to standard output." >&2
- tar cvfS - -- $src | gzip -9v
- else
- echo "Writing gzip'd tar archive to \"$dest\"." >&2
- tar -cvS --totals --exclude "$dest" -f - -- $src | gzip -9v > "$dest"
- ls -l "$dest" >&2
- fi
-
- exit 0
-