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@ngyuki
Last active September 18, 2020 07:29
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auto generate issue for centos6
#!/bin/bash
#
### BEGIN INIT INFO
# Required-Start: $network
# Should-Start: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
### END INIT INFO
#
# chkconfig: 2345 98 02
# description: autoissue
#
. /etc/init.d/functions
function err()
{
echo "command notfound $1" 1>&2
exit 1
}
function has()
{
type "$1" 1> /dev/null 2>&1
}
[ "$EUID" -eq 0 ] || err "this script is root only"
has ip || err "ip command notfound"
has perl || err "perl command notfound"
if has banner; then
function print_banner() {
banner " $1.$2" " $3.$4"
}
elif has figlet; then
function print_banner() {
figlet -f banner " $1 . $2"$'\n'" . $3 . $4"
}
else
err "banner or figlet command notfound"
fi
function start() {
sed -i -ne '/^===*/q;p' /etc/issue
{
echo '==='
print_banner $(
ip -o route get 255.255.255.255 |
perl -nle 'print "$1 $2 $3 $4" if /\s+src\s+(\d+)\.(\d+)\.(\d+)\.(\d+)/'
)
} >> /etc/issue
echo -n "Auto issue generate"
success
echo
#pkill agetty 1>/dev/null 2>&1
#pkill mingetty 1>/dev/null 2>&1
}
function stop() {
sed -i -ne '/^===*/q;p' /etc/issue
echo -n "Auto issue restore"
success
echo
}
case "$1" in
start)
start
;;
stop)
stop
;;
status)
;;
*)
echo $"Usage: $0 {start|stop|status}"
exit 2
esac
exit 0
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