1 输入YES打印
INPUT=$1 if [ $INPUT == "YES" ];then echo "Please install LAMP." else echo "Please exit." fi
2 创建用户修改密码并输入到文件中
#!/bin/bash #auto modify user passwd #by author chy for i in 1 2 3 4 5 do useradd chy_$i echo "m_pwd_$i"|passwd --stdin chy_$i echo "用户名/密码："chy_$i m_pwd_$i >>/tmp/user_list.txt done
3 在上一条命令的基础上循环修改密码
[root@192 sh]# more for_user.sh #!/bin/bash #auto modify user passwd #by author chy for i in chy_1 chy_2 chy_3 chy_4 chy_5 do echo "m_pwd"|passwd --stdin $i echo "用户名/密码："chy_$i m_pwd >>/tmp/user_list2.txt done 注：echo "m_pwd"|passwd --stdin root //修改root密码
4 求和1-100
#!/bin/sh #auto add 1-100 j=0 for ((i=1;i<=100;i++)) do j=`expr $i + $j` done echo $j
5 找到相关log，然后批量打包
[root@192 sh]# more log.sh #!/bin/sh #auto tar log for i in ` find /var/log -name "*.log" ` do tar -cPzf 2016log.tgz $i echo "压缩" $i done echo "压缩完毕"
6 远程主机批量传输文件，可以用在设置密钥上
[root@192 sh]# more scp.sh #!/bin/sh #auto scp files for client #by authors chy 2016 for i in 131 135 do scp /root/test.txt root@192.168.57.$i:/root done
7 批量传输，可实现批量部署
[root@192 sh]# more while.sh
#!/bin/sh
while read i
do
IP=`echo $i|awk '{print $1}'`
DIR=`echo $i|awk '{print $2}'`
DES=`echo $i|awk '{print $3}'`
echo scp -r $DIR/* root@$IP:$DES/
done < test.txt8 while逐行读取某个(/etc/hosts)文件
[root@192 sh]# more read.sh #!/bin/sh while read line do echo $line; done < /etc/hosts
9 until条件判断数字
[root@192 sh]# more until.sh #!/bin/sh a=$1 until [[ $a -lt 0 ]];do #until [[ $a -lt 0 ]];do echo $a; ((a--)); done;
10 打包日志文件
[root@192 sh]# more auto_log_tgz.sh #!/bin/bash #auto log packages #by chy 20161130 LOGS_DIR="/var/log/" for i in `find $LOGS_DIR -name "secure-*"` do FILES=`echo $i|xargs basename` DIR=`echo $i|xargs dirname` cd $DIR echo "The tar -czPvf $FILES.tar.gz $FILES" tar -czPvf $FILES.tar.gz $FILES rm -rf $FILES done
11远程执行命令
#!/bin/sh
CMD=$*
FILES=/data/sh/test.txt
if [ -z “$CMD” ];then
echo -e "\033[32mUsage:{Please enter $0 CMD df-h|ifconfig ehto} \033[0m"
exit
fi
for i in `cat $FILES`
do
echo -e "\033[32m-------------\033[0m"
echo -e "\033[32mssh -l root $i $CMD\033[0m"
ssh -l root $i "$CMD"
done
远程执行命令脚本
[root@192 sh]# cat cat_List.sh
#!/bin/sh
##sed有变量要用双引号
CMD=$*
FILES=/data/sh/test.txt
#####判断是否有命令输入########
if [ -z "$CMD" ];then
echo -e "\033[32mUsage:{Please enter $0 IP and CMD df-h|ifconfig ehto} \033[0m"
exit
fi
########判断如果输入ip#########
NUM=`echo $1|sed 's/\./\n/g'|wc -l`
if [[ $NUM == 4 ]];then
CMD=`echo $*|sed "s/$1//g"`
echo -e "\033[32m$1\033[0m"
ssh -l root $1 "$CMD"
exit
fi
############执行远程命令####3
for i in `cat $FILES`
do
echo -e "\033[32m-------------\033[0m"
echo -e "\033[32mssh -l root $i $CMD\033[0m"
ssh -l root $i "$CMD"
done12 read---可以传值
root@192 sh]# more read-p.sh #!/bin/sh read -p "Please enter a number:" NUM echo $NUM [root@192 sh]# ./read-p.sh Please enter a number:i love you i love you
13 while
小于10时一直输出 #!/bin/sh i=1; while [[ $i -lt 10 ]]; do echo $i; #((i++)); i=`expr $i + 1` done; 循环打印 [root@192 sh]# more while.sh 无限循环 #!/bin/sh i=1; while true; do echo $i; done; 执行命令并将命令输入到文本 #!/bin/sh while read i do echo ssh -l root $i 'df -h;ifconfig' done < test.txt
14 case条件打印菜单
[root@192 sh]# more case.sh #!/bin/sh #i=$1 read -p "Please Enter A OS system[centos|redhat|windows]:" i case $i in centos) echo "The OS System is $i" ;; redhat) echo "The OS System is $i" ;; windows) echo "The OS System is $i" ;; *) echo "The OS System is MAC" ;; esac
15 select打印菜单
#!/bin/sh PS3="What you like most of the open source system?" select i in CentOS RedHat Ubuntu do echo "Your Select System: "$i done 输出： [root@192 sh]# ./select.sh 1) CentOS 2) RedHat 3) Ubuntu What you like most of the open source system?1 Your Select System: CentOS What you like most of the open source system?2 Your Select System: RedHat What you like most of the open source system?3 Your Select System: Ubuntu What you like most of the open source system?
16 判断ip输入是否正确
[root@192 ~]# echo 192.168.57.132 |awk -F . '$1<=255&&$2<=255&&$3<=255&&$4<=255 {print $0}'
192.168.57.13217 find
find 之-type f／d 类型是文件或者目录
[root@192 sh]# find / -name httpd.conf -type f
/etc/httpd/conf/httpd.conf
/usr/lib/tmpfiles.d/httpd.conf
xargs将find找到的文件进行删除 \;——对应find ｛｝——对应find的内容
[root@192 ~]# find /root/ -name "httpd.conf" |xargs rm -rf {} \;
exec找到目录并删除
find /tmp/* -type d -exec rm -rf {} \;
exec将find找到的内容进行复制
[root@192 ~]# find /etc/ -name "httpd.conf" -exec cp {} /root/ \;
[root@192 sh]# for i in `find /etc/ -name "httpd.conf"`;do cp $i /root ;done
exec——mv
[root@192 ~]# find /root/ -name httpd.conf -exec mv {} /tmp \;
find找到大于4M的文件
[root@192 ~]# find /root/ -type f -size +4M
/root/download
/root/root@192.168.57.132
/root/test.img
find找到大于4M的文件并打包
[root@192 ~]# find /root/ -type f -size +4M -exec tar czPvf 2016.tar.gz {} \;
find查找mtime100天以前创建的文件
[root@192 ~]# find /root/* -type f -mtime +100
/root/mysql-community-release-el7-5.noarch.rpm
log中－大小size 时间mtime 权限 perm 剔除某个文件! -name
[root@192 log]# find . -name "messages-*" -size +500k -mtime +1 ! -name "messages-20161129" -perm 755
./messages-201611222
find找到一级目录名称
[root@192 ~]# find . -maxdepth 1 -type d
! -name -除去. 当前目录
sed－替换
[root@192 ~]# find . -maxdepth 1 -type d ! -name "." |sed "s/.\///g"
.ssh
g18 sed
a 替换
将zabbix替换为mocha
[root@192 ~]# sed -i 's/zabbix/mocha/g' passwd
i－打印预览，没有i的话只打印不输入,可进行调试
1-3行将lib替换为mocha
没有g只替换1行，1-替换第一个，2-替换第2个
[root@192 ~]# sed -i '1,3s/lib/mocha/g' passwd
b 查找
n -找到指定这一条
p－打印,p放在外面里面都可以
, -1到3行
；－1和3行
[root@192 ~]# df -h|sed -n '/sda1/p'
/dev/sda1 497M 125M 373M 25% /boot
[root@192 ~]# df -h|sed -n '/sda1'/p
/dev/sda1 497M 125M 373M 25% /boot
[root@192 ~]# df -h|sed -n '1,2p'
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root 18G 4.1G 14G 24% /
[root@192 ~]# df -h|sed -n '1p;2p'
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root 18G 4.1G 14G 24% /
a -下一行添加，只在sed里生效，a后面可以有空格也可以没有空格，匹配到/home/
[root@192 ~]# sed '/home/aMy name is chy,you can do it' passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
My name is chy,you can do it
ntp:x:38:38::/etc/ntp:/sbin/nologin
i－上一行添加
[root@192 ~]# sed '/home/iMy name is chy,you can do it' passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
My name is chy,you can do it
mocha:x:1000:1000::/home/mocha:/sbin/nologin
ntp:x:38:38::/etc/ntp:/sbin/nologin
^ -开头
& －添加
$ －结尾
[root@192 ~]# sed 's/^ntp/& you can do it/g' passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
ntp you can do it:x:38:38::/etc/ntp:/sbin/nologin
[root@192 ~]# sed 's/ntp$/& you can do it/g' passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
ntp:x:38:38::/etc/ntp:/bin/ntp you can do it
找到／结尾的
[root@192 ~]# df -h |sed -n '/\/$/p'
/dev/mapper/centos-root 18G 4.1G 14G 24% /
找到后面是／的，将G去掉，将％去掉
[root@192 ~]# df -h |sed -n '/\/$/p'|sed 's/G//g'|sed 's/%//g'
/dev/mapper/centos-root 18 4.1 14 24 /
合并sed后,用;
[root@192 ~]# df -h |sed -n '/\/$/p'|sed 's/G//g;s/%//g'
/dev/mapper/centos-root 18 4.1 14 24 /
或者，用e
[root@192 ~]# df -h |sed -n '/\/$/p'|sed -e 's/G//g' -e 's/%//g'
/dev/mapper/centos-root 18 4.1 14 24 /
在文件的每一行末尾加you can do it/g
[root@192 ~]# sed 's/$/& you can do it/g' aa.txt
rpc you can do it
rpcuser you can do it
nfsnobody you can do it
mocha you can do it
ntp you can do it
在文件的每一行开头加you can do it/g
[root@192 ~]# sed 's/^/& you can do it/g' aa.txt
you can do itrpc
you can do itrpcuser
you can do itnfsnobody
you can do itmocha
you can do itntp
查找ip
ifconfig|grep "inet"|sed '2,$d'|awk -F: '{print $2}'|awk '{print $1}'
[root@test1 ~]# ifconfig|grep "inet"
inet addr:10.8.202.162 Bcast:10.8.202.255 Mask:255.255.255.0
inet6 addr: fe80::c8c9:b6ff:fe78:1a09/64 Scope:Link
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host］
[root@test1 ~]# ifconfig|grep "inet"|sed '2,$d' //sed的意思是删除第二行到最后一行
inet addr:10.8.202.162 Bcast:10.8.202.255 Mask:255.255.255.019 awk
awk
NR 当前行数，从1开始
$0 当前记录
$1~$n 当前记录第n个字段
[root@192 ~]# cat aa.txt |awk 'NR==1 {print $0}'
rpc 1
[root@192 ~]# cat aa.txt |awk 'NR==1 {print $1}'
rpc
[root@192 ~]# cat aa.txt |awk '{print $1}'
rpc
rpcuser
nfsnobody
mocha
ntp
NF 当前记录字段个数
(NF-1)
[root@192 ~]# more aa.txt
rpc 1 you can do it
rpcuser 2 you can do it
nfsnobody 3 you can do it
mocha 4 you can do it
ntp 5 you can do it
[root@192 ~]# cat aa.txt |awk ' {print $NF}'
it
it
it
it
it
[root@192 ~]# cat aa.txt |awk ' {print $(NF-1)}'
do
do
do
do
do
^it 匹配it开头的
[root@192 ~]# cat aa.txt |awk '/it/'
rpc 1 you can do it
rpcuser 2 you can do it
nfsnobody 3 you can do it
mocha 4 you can do it
it 5 you can do it
[root@192 ~]# cat aa.txt |awk '/^it/'
it 5 you can do it
查找tcp开头的，打印最后一个域
[root@192 ~]# netstat -an|awk '/^tcp/ {print $NF}'
LISTEN
ESTABLISHED
LISTEN
LISTEN
LISTEN
打印长度大于10的
[root@192 ~]# cat passwd |awk 'length($0)>10 {print}'
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
ntp:x:38:38::/etc/ntp:/bin/ntp
[root@192 ~]# cat passwd |awk 'length($0)>10 {print NR}'
1
2
3
4
5
tail -3 最后三行
[root@192 ~]# more passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
ntp:x:38:38::/etc/ntp:/bin/ntp
[root@192 ~]# awk -F: '{print $1}' passwd|tail -3
nfsnobody
mocha
ntp20 grep
grep -匹配
[root@192 ~]# grep --color mocha passwd
rpc:x:32:32:Rpcbind Daemon:/var/mocha/rpcbind:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/mocha/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/mocha/nfs:/sbin/nologin
mocha:x:1000:1000::/home/mocha:/sbin/nologin
^mocha开头
[root@192 ~]# grep ^mocha passwd
mocha:x:1000:1000::/home/mocha:/sbin/nologin
i-不区分大小写
[root@192 ~]# grep -i --color can aa.txt
rpc 1 you can do it
rpcuser 2 you can do it
nfsnobody 3 you can do it
mocha 4 you can do it
it 5 you can do it
YOU CAN DO IT
n－打印行号
[root@192 ~]# grep --color -in mocha aa.txt
4:mocha 4 you can do it
v-反向选择
[root@192 ~]# grep --color -v can aa.txt
YOU CAN DO IT
不区分大小写，取反
[root@192 ~]# ls -l|grep -vi ^-
总用量 28180
drwxr-xr-x. 3 root root 35 11月 30 15:22 g
grep+awk结合，cut截取
[root@192 ~]# more aa.txt |grep broadcast|awk '{print $2}'
addr:192.168.57.131
[root@192 ~]# more aa.txt |grep broadcast|awk '{print $2}'|cut -d: -f1
addr
[root@192 ~]# more aa.txt |grep broadcast|awk '{print $2}'|cut -d: -f2
192.168.57.131
[root@192 ~]#
grep -v反相选择
[root@192 ~]# ifconfig |grep inet|awk '{print $2}'|cut -d: -f2|grep -v "127"
192.168.57.131
[] 匹配一个指定范围内的字符，如'[Gg]rep'匹配Grep和grep
[root@192 ~]# cat aa.txt |grep [yY]ou
[^] 匹配一个不在指定范围内的字符，如：'[^A-FH-Z]rep'匹配不包含A-R和
匹配三个数字的
[root@192 ~]# cat aa.txt |grep [0-5][0-5][0-9]
inet addr:192.168.57.131 netmask 255.255.255.0 broadcast 192.168.57.
大小写一起匹配
[root@192 ~]# cat aa.txt |grep [Aa-zZ]
grep-E {6} 重复执行某条命令6次，或者：
\{6\} 重复执行某条命令
[root@192 ~]# grep -E "^[a-z]{6}" aa.txt
rpcuser 2 you can do it
nfsnobody 3 you can do it
[root@192 ~]# grep "^[a-z]\{6\}" aa.txt
rpcuser 2 you can do it
nfsnobody 3 you can do it
匹配6和7，建议使用grep－E
[root@192 ~]# grep -E "^[a-z]{6,7}" aa.txt
rpcuser 2 you can do it
nfsnobody 3 you can do it
匹配IP
[root@192 ~]# grep -E "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}" aa.txt
inet addr:192.168.57.131 netmask 255.255.255.0
或者()将重复的东西作为一个变量
[root@192 ~]# grep -E "([0-9]{1,3}\.){3}[0-9]{1,3}" aa.txt
inet addr:192.168.57.131 netmask 255.255.255.0 broadcast 192.168.57
/(../) 标记匹配字符，如'/(love/)'，love被标记为1
[root@192 ~]# grep "\(rpc\)" aa.txt
rpc 1 you can do it
rpcuser 2 you can do it
<>严格匹配
[root@192 ~]# grep "\<rpc\>" aa.txt
rpc 1 you can do it
c-统计
[root@192 ~]# grep -c "you" aa.txt
5
r.c－查找三个字符的，开头是r，结尾是c的
[root@192 ~]# grep "r.c" aa.txt
rpc 1 you can do it
rpcuser 2 you can do it
[root@192 ~]#
^$-查找空格
[root@192 ~]# grep "^ss$" aa.txt
ss
[root@192 ~]# grep "^$" aa.txt
A-下面三行打印
B—上面三行打印
c－上下三行
看日志会有用
[root@192 ~]# grep -B 3 "111" aa.txt
mocha 4 you can do it
it 5 you can do it
YOU CAN DO IT
111
[root@192 ~]# grep -A 3 "111" aa.txt
111
inet addr:192.168.57.131 netmask 255.255.255.0 broadcast 192.168.57.
10.10.168.162
1.1.1.1
[root@192 ~]# grep -A 3 -B 3 "111" aa.txt
mocha 4 you can do it
it 5 you can do it
YOU CAN DO IT
111
inet addr:192.168.57.131 netmask 255.255.255.0 broadcast 192.168.57.
10.10.168.162
1.1.1.1
[root@192 ~]# grep -C 3 "111" aa.txt
查找111这个配置在那个文件中
[root@192 test]# grep -ra "111" *
a:111
aa.txt:111
脚本：
备份脚本---链接
更新
获取cpu
[root@192 test]# cat /proc/cpuinfo|grep "physical id"|sort |uniq -c|wc -l
1
获取磁盘大小，注意修改参数
[root@192 test]# fdisk -l|grep "^Disk"|grep -v "lab"|grep -v "iden"|awk '{sum+=$3}END {print sum}'
21.3
