Shell脚本解压rpm软件包_linux shell_

 #!/bin/sh #************************************************************* # Author: Unknown, Modified by jb51.net # Filename: rpmextract.sh # Description: extrac rpm package without install # rpm related program #************************************************************* if [ $# -lt 1 ] ; then echo -e "anUsage: `basename $0`  n" exit 1 fi pkg=$1 if [ ! -e "$pkg" ]; then echo -e "nERR: package $pkg does not exist ! n" exit 1 fi ### check if cpio exists CPIO_VER=`cpio --version 2>/dev/null` if [ -z "$CPIO_VER" ]; then echo -e "nERR: prerequisite program cpio does not found ! n" exit 1 fi leadsize=96 o=`expr $leadsize + 8` set `od -j $o -N 8 -t u1 $pkg` il=`expr 256 * ( 256 * ( 256 * $2 + $3 ) + $4 ) + $5` dl=`expr 256 * ( 256 * ( 256 * $6 + $7 ) + $8 ) + $9` # echo "sig il: $il dl: $dl" sigsize=`expr 8 + 16 * $il + $dl` o=`expr $o + $sigsize + ( 8 - ( $sigsize % 8 ) ) % 8 + 8` set `od -j $o -N 8 -t u1 $pkg` il=`expr 256 * ( 256 * ( 256 * $2 + $3 ) + $4 ) + $5` dl=`expr 256 * ( 256 * ( 256 * $6 + $7 ) + $8 ) + $9` # echo "hdr il: $il dl: $dl" hdrsize=`expr 8 + 16 * $il + $dl` o=`expr $o + $hdrsize` dd if=$pkg ibs=$o skip=1 2>/dev/null | gunzip | cpio -idmuv || dd if=$pkg ibs=$o skip=1 2>/dev/null | bzip2 -d | cpio -idmuv