tgz

Berkely的学生写的

#!/bin/sh
# make, list and extract tar.gz files
# $Id: tgz,v 1.1.1.1 1998/09/17 05:59:10 ranga Exp $

USAGE="Usage: `basename $0` [-t|-x|-r] [file] or tgz [-c] [source dir] [dest dir (opt)]";

if [ -n "$2" ]; then
    MODE=`echo "$1" | sed -e 's/^-//'`;
    case $MODE in 
	t | x) 
	    if [ -f "$2" ]; then
		gzip -v -best -cd "$2" | tar -"$MODE"vf -;
	    else
		echo "$USAGE";
	    fi
	    ;;
	c)
	    if [ -d "$2" ]; then
		DIR=`echo "$2" | sed -e 's/\/*$//'`;
		DEST=".";

		if [ -n "$3" -a -d "$3" ] ; then 
		    DEST=`echo "$3" | sed -e 's/\/*$//'`;
		fi

		tar -"$MODE"vf "$DEST/$DIR.tar" "$DIR";
		gzip -v -best "$DEST/$DIR.tar";
		unset DIR DEST;
	    else
		echo "$USAGE";
            fi
	    ;;
	r)
	    if [ -f "$2" ] ; then
		case "$2" in
		    *.tgz) 
			FNAME=`echo "$2" | sed -e 's/tgz$/tar\.gz/'` ;;
		    *.tar.gz) 
			FNAME=`echo "$2" | sed -e 's/tar\.gz$/tgz/'` ;;
		    *) 
			echo "ERROR: file extension is not tgz or tar.gz" ;;
		esac
		if [ -n "$FNAME" ] ; then mv "$2" "$FNAME" ; fi ; unset FNAME
	    else
		    echo "$USAGE"
	    fi
	    ;;
	*) echo "$USAGE" ;;
    esac;
else
    echo "$USAGE";
fi;
    
unset USAGE MODE