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#!/bin/sh
who=$(id -u)
if [ $who -ne 0 ]; then
echo 'Exit. System update must be run as root.'
exit 1
fi
check_exit() {
if [ $? -ne 0 ];then
echo "Update failed."
exit 1
fi
}
prepare() {
cd /
umount -f /etc
mount -o remount,rw /
}
extract_from_file() {
prepare
cat $1 | gunzip -c | tar -xf -
check_exit
}
extract_from_ssh() {
prepare
ssh $1 "cat $2" | gunzip -c | tar -xf -
check_exit
}
extract_from_http() {
prepare
wget -O - $1 | gunzip -c | tar -xf -
check_exit
}
case $1 in
file://*|/*)
url=$(echo $1|sed -e "s#file://##")
echo "Updating system from $1"
extract_from_file $url
;;
ssh://*)
host=$(echo $1|sed -e "s#ssh://\(.*\):.*#\1#")
file=$(echo $1|sed -e "s#ssh://.*:\(.*\)#\1#")
echo "Updating system from $1"
extract_from_ssh $host $file
;;
http://*|ftp://*)
echo "Updating system from $1"
extract_from_http $1
;;
*)
echo "No or wrong uri given. exit."
echo "Use one of the following uri:"
echo "http://myserver/myupdate.tar.gz"
echo "ssh://myuser@myserver:/my/path/myupdate.tar.gz"
echo "file:///mypath/myupdate.tar.gz"
exit 1
;;
esac
sync
mount -o bind /etc /tmp/.cfgfs/root
echo "Update sucessful. You should reboot now."
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