[fedora]downloadinstalledrpm.

#!/bin/bashvar=$(yum list installed)echo "yum list installed return string."sleep 1echo "$var" | while read line;do str1=${line%%' '*}str3=${line##*' '}if [ "$str1" != "$str3" ] && [ "${str3:0:1}" == "@" ] && [ "${str3:1:1}" != "/" ]; thenecho "$str1""<->""$str3"## 下載這個軟體包到指定的具錄中去.以便備份.name=${str1%%.*}addr=${str3##*@}pack_path="/var/cache/yum/i386/19/$addr/packages"echo "$name is $addr $pack_path"if [ -d "$pack_path" ]; thenecho "$pack_path"cmd="sudo yumdownloader --destdir=$pack_path $name"$cmdsleep 1fifidone

> find file "/etc/yum.conf" string "keepcache" . set value "1"