更新时间:2022-09-03 17:24:15
1、编写脚本/root/bin/systeminfo.sh,显示当前主机系统信息,包括主机名,IPv4地址,操作系统版本,内核版本,CPU型号,内存大小,硬盘大小。
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[root@centos6 scripts] # cat systeminfo.sh
#!/bin/bash HostName=` uname -n`
Ipv4=` ifconfig | sed -nr '2s#.*addr:(.*) Bca.*$#\1#gp' `
Cpu=`lscpu| sed -n '13p' | tr -s ' ' `
Mem=` free -hm | grep "Mem" | tr -s ' ' ':' | cut -d: -f2`
Disk=` fdisk -l | grep '/dev/sda:' | sed -r 's#.*: (.*),.*$#\1#g' `
echo the hostname is: $HostName
echo the server_ip is: $Ipv4
echo the opeartion system is: $( cat /etc/redhat-release )
echo the kernel verison is: $( uname -r)
echo the cpuinfo is: $Cpu
echo the memery size is: $Mem
echo the Hardisk size is: $Disk
[root@centos6 scripts] # sh systeminfo.sh
the hostname is: centos6.localdomain
the server_ip is: 10.1.249.94 the opeartion system is: CentOS release 6.8 (Final) the kernel verison is: 2.6.32-642.el6.x86_64 the cpuinfo is: Model name: AMD A8-4500M APU with Radeon(tm) HD Graphics the memery size is: 980M the Hardisk size is: 128.8 GB [root@centos6 scripts] #
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2、编写脚本/root/bin/backup.sh,可实现每日将/etc/目录备份到/root/etcYYYY-mm-dd中
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[root@centos6 scripts] # cat backup.sh
#!/bin/bash backup_dir= "/tmp/etc-$(date +%F)"
cp -aR /etc/ $backup_dir && echo "the $backup_dir is backup successfull"
[root@centos6 scripts] # sh backup.sh
the /tmp/etc-2016-08-11 is backup successfull
[root@centos6 scripts] # ll /tmp/
总用量 40 drwxr-xr-x. 122 root root 12288 8月 11 19:03 etc-2016-08-11 [root@centos6 scripts] #
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3、编写脚本/root/bin/disk.sh,显示当前硬盘分区中空间利用率最大的值
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[root@centos6 scripts] # cat disk.sh
#!/bin/bash MaxUse=` df | grep "/dev/sda" | sed -r 's#.* ([0-9]+%).*#\1#g' | sort -nr| head -1`
echo "当前硬盘分区中空间利用率最大的值为:$MaxUse"
[root@centos6 scripts] # sh disk.sh
当前硬盘分区中空间利用率最大的值为:22% [root@centos6 scripts] #
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4、编写脚本/root/bin/links.sh,显示正连接本主机的每个远程主机的IPv4地址和连接数,并按连接数从大到小排序
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[root@centos6 scripts] # cat links.sh
#!/bin/bash Links=` netstat -tn | grep tcp | tr -s ' ' ':' | cut -d: -f6| sort -nr| uniq -c`
echo -e "主机的每个远程主机的IPv4连接数和地址为:$Links"
[root@centos6 scripts] # sh links.sh
主机的每个远程主机的IPv4连接数和地址为: 2 10.1.250.79 [root@centos6 scripts] #
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5、写一个脚本/root/bin/sumid.sh,计算/etc/passwd文件中的第10个用户和第20用户的ID之和
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[root@centos6 scripts] # cat sumid.sh
#!/bin/bash uuid1=` cat /etc/passwd | sed -n '10p' | cut -d: -f3`
uuid2=` cat /etc/passwd | sed -n '20p' | cut -d: -f3`
sum =$(($uuid1+$uuid2))
echo "第10个用户和第20用户的ID之和为:$sum"
[root@centos6 scripts] # sh sumid.sh
第10个用户和第20用户的ID之和为:180 [root@centos6 scripts] #
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6、写一个脚本/root/bin/sumspace.sh,传递两个文件路径作为参数给脚本,计算这两个文件中所有空白行之和
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[root@centos6 scripts] # cat sumspace.sh
#!/bin/bash [ $ # -lt 2 ] && echo "please input two path:" && exit 1
Args1=` grep "^$" $1 | wc -l`
Args2=` grep "^$" $2 | wc -l`
let sumspace=$Args1+$Args2
echo "这两个文件中所有空白行之和为:$sumspace"
[root@centos6 scripts] # sh sumspace.sh /etc/issue /etc/issue
这两个文件中所有空白行之和为:2 [root@centos6 scripts] # sh sumspace.sh
please input two path: [root@centos6 scripts] #
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6、写一个脚本/root/bin/sumfile.sh,统计/etc, /var, /usr目录***有多少个一级子目录和文件
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[root@centos6 scripts] # sh sumfile.sh
please input at least three dir :
[root@centos6 scripts] # sh sumfile.sh /etc /var /usr
/etc , /var , /usr 共有一级子目录和文件292个
[root@centos6 scripts] # cat sumfile.sh
#!/bin/bash [ $ # -lt 3 ] && echo "please input at least three dir:" && exit 1
total1=` ls -A $1 | wc -l`
total2=` ls -A $2 | wc -l`
total3=` ls -A $3 | wc -l`
sumfile=$(($total1+$total2+$total3)) echo "$1,$2,$3共有一级子目录和文件$sumfile个"
[root@centos6 scripts] #
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7、写一个脚本/root/bin/argsnum.sh,接受一个文件路径作为参数;如果参数个数小于1,则提示用户“至少应该给一个参数”,并立即退出;如果参数个数不小于1,则显示第一个参数所指向的文件中的空白行数
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[root@centos6 scripts] # sh argsum.sh
at least input one args: [root@centos6 scripts] # sh argsum.sh /etc/issue
the args you input has 1 lines space [root@centos6 scripts] # cat argsum.sh
#!/bin/bash [ $ # -lt 1 ] && echo "at least input one args:" && exit 1 || echo "the args you input has `grep "^$" $1|wc -l` lines space"
[root@centos6 scripts] #
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8、写一个脚本/root/bin/hostping.sh,接受一个主机的IPv4地址做为参数,测试是否可连通。如果能ping通,则提示用户“该IP地址可访问”;如果不可ping通,则提示用户“该IP地址不可访问”
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[root@centos6 scripts] # sh hostping.sh
please input one ip address: [root@centos6 scripts] # sh hostping.sh 10.1.249.94
you can access the website! [root@centos6 scripts] # sh hostping.sh 10.1.249.93
the ip is not unreachable [root@centos6 scripts] # cat hostping.sh
#!/bin/bash [ $ # -lt 1 ] && echo "please input one ip address:" && exit 1
ping -c1 -W1 $1 &> /dev/null && echo "you can access the website!" || echo "the ip is not unreachable"
[root@centos6 scripts] #
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本文转自chengong1013 51CTO博客,原文链接:http://blog.51cto.com/purify/1837417,如需转载请自行联系原作者