第12章代码《跟老男孩学习Linux运维：Shell编程实战》
# for n in `ls *.sh`;do echo;echo;echo "# cat $n";cat $n;done# cat 12_1_1.sh
#!/bin/bash
#Author:oldboy training
#Blog:http://oldboy.blog.51cto.com
#Time:2016-09-21 23:16:11
#Name:12_1_1.sh
#Version:V1.0
#Description:test{break|continue|exit|return}script.
if [ $# -ne 1 ];then
echo $"usage:$0 {break|continue|exit|return}"
exit 1
fi
test(){
for((i=0; i/dev/null
RETVAL=$?
if [ $RETVAL -eq 0 ]
then
action "add $ip" /bin/true
else
action "add $ip" /bin/false
fi
done
return $RETVAL
}
del(){
for ip in {16..1}
do
if [ $ip -eq 10 ]
then
continue
fi
#ip addr del 10.0.2.$ip/24 dev eth0 &>/dev/null
ifconfig eth0:$ip down &>/dev/null
RETVAL=$?
if [ $RETVAL -eq 0 ]
then
action "del $ip" /bin/true
else
action "del $ip" /bin/false
fi
done
}
case "$1" in
start)
add
RETVAL=$?
;;
stop)
del
RETVAL=$?
;;
restart)
del
sleep 2
add
RETVAL=$?
;;
*)
printf "USAGE:$0 {start|stop|restart}\n"
esac
exit $RETVAL
# cat 12_2_2.sh
#!/bin/bash
#Author:oldboy training
#Blog:http://oldboy.blog.51cto.com
#Time:2016-09-22 00:36:18
#Name:12_2_2.sh
#Version:V1.0
#Description:config ip new script.
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
RETVAL=0
op(){
if [ "$1" == "del"]
then
list=`echo {16..1}`
else
list=`echo {1..16}`
fi
for ip in $list
do
if [ $ip -eq 10 ]
then
continue
fi
ip addr $1 10.0.2.$ip/24 dev eth0 label eth0:$ip &>/dev/null
RETVAL=$?
if [ $RETVAL -eq 0 ]
then
action "$1 $ip" /bin/true
else
action "$1 $ip" /bin/false
fi
done
return $RETVAL
}
case "$1" in
start)
op add
RETVAL=$?
;;
stop)
op del
RETVAL=$?
;;
restart)
op del
sleep 2
op add
RETVAL=$?
;;
*)
printf "USAGE:$0 {start|stop|restart}\n"
esac
exit $RETVAL
# cat 12_3_1.sh
#!/bin/bash
sum=0
exec /dev/null
if [ $? -ne 0 ];then
continue
fi
((sum=sum+$size))
done
echo "${1}:total:${sum}bytes =`echo $((${sum}/1024))`KB"
# cat 12_4_1.sh
#!/bin/bash
for n in {0..32767}
do
echo "`echo $n|md5sum` $n" >>/tmp/zhiwen.log
done
# cat 12_4_2.sh
#!/bin/bash
#for n in {0..32767}
#do
# echo "`echo $n|md5sum` $n" >>/tmp/zhiwen.log
#done
md5char="4fe8bf20ed"
while read line
do
if [ `echo $line|grep "$md5char"|wc -l` -eq 1 ]
then
echo $line
break
fi
done
页:
[1]