爱站程序员基地文章目录
- 1.鸡兔同笼
- 2. 死亡转盘游戏
- 3.随机颜色（一giao我嘞giao~）
- 5.短路语句，用户是否存在以及创建
- 6.实现运维工作菜单
- 7.BMI身体健康
- 8.九九乘法表（需要理清逻辑）
- 9.半自动交互式网络配置脚本
- 10.初始化脚本（持续完善中）
- 11.模拟生成百分数进度
- 11.猜数小游戏
- 12.国际象棋
1.鸡兔同笼
#！/bin/bashHEAD=$1FOOT=$2RABBIT=(((FOOT-HEAD-HEAD)/2))CHOOK=(HEAD-RABBIT)echo \"The number of RABBIT is:${RABBIT}\"echo \"The number of CHOOK is :${CHOOK}\"
2. 死亡转盘游戏
[ [[[RANDOM%6] = 0 ] && echo “boom” || echo “you are luck dog!”
3.随机颜色（一giao我嘞giao~）
echo -e \"\\033[1;$[$RANDOM%7+31]m一giao我嘞giao~\\033[0m\"
4.检测用户panda用户是否存在，如果存在显示其信息，如果未存在则创建panda。
read -p \"Please input the username :\" NAMEINFO=\"echo `id ${NAME}`\"ifid ${NAME} &> /dev/nullthenecho -e \"\\033[1;32mThe user ${NAME} is exist,and ${NAME}\'s information:\\n${INFO}\\033[0m\"elseecho -e \"The user ${NAME} dont exist \"echo -e \"\\033[1;31mI will crate the account ${NAME},please choice \"yes\" or \"no\" \\033[0m\"read -p \"Please choice :\" YNif[[ ${YN} =~ ^([Yy]|[Ee]|[Ss])$ ]];thenuseradd ${NAME};echo \"${NAME}:123456\" |chpasswdchage -d1 ${NAME}echo \"The default password is 123456 ,you must change your passwd next login (force)\"elseecho -e \"\\033[1;33mwill leave and exit!!!\\033[0m\"fifi
5.短路语句，用户是否存在以及创建
NAME=pandaid $NAME &> /dev/null && echo \"the account is exist\" || echo\"the account dont exist\";
6.实现运维工作菜单
echo -en \"\\033[1;$[$RANDOM%7+31]m\"cat<<EOFPlease choice:1 DB bakup2 Clean log3 Soft update4 Soft goback5 Damage foreverEOFecho -en \"\\033[0m\"read -p \"Please select the corresponding number above \" MENU[ ${MENU} -eq 1 ] &&[ ${MENU} -eq 2 ] &&[ ${MENU} -eq 3 ] &&[ ${MENU} -eq 4 ] &&[ ${MENU} -eq 5 ] && echo \"just a joke!\"
知识点：条件测试与短路
7.BMI身体健康
read -p \"Please input your HIGHT （the unit:meter range:0<HIGHT&<3：eg:1.81）:\" HIGHT#键入数值正确性检测：if[[ ! ${HIGHT} =~ ^[0-2](\\.[0-9]{1,2})$ ]]thenecho \"please input right number\"firead -p \"Please input your HIGHT （the unit:KG range:0<WEIGHT&<250：eg:70）:\" WEIGHTif[[ ! ${WEIGHT} =~ ^[0-9][0-9]|1[0-9][0-9]|2[0-5][0-9] ]]# [[ ! ${WEIGHT} =~ ^[0-9]{1,3}$ ]]thenecho \"please input right number\"fiBMI=`echo ${WEIGHT}/${HIGHT}^2 |bc`if[[ ${BMI} -le 18 ]]#-le 小于等于thenecho \"you are so light\"elif[[ ${BMI} -lt 24 ]]thenecho \" you are health\"elseecho \"you are so fat!\"fi
8.九九乘法表（需要理清逻辑）
观察结构：
1x1=11x2=2 2x2=41x3=3 2x3=6 3x3=91x4=4 2x4=8 3x4=12 4x4=161x5=5 2x5=10 3x5=15 4x5=20 5x5=251x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=361x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=491x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=641x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81
解析：
每个乘法第二个数为行数（即i行）
每个乘法第一个数是从1到行数（即1…i）（seq 可以解决，二次循环方法也可解决）
语法一：利用echo `seq i` 打印每个乘法第一个数
for i in {1..9}dofor j in `seq $i`doecho -e \"${j}x${i}=$[j*i]\\t\\c\"doneechodone
语法二：利用二次循环循环出每个乘法第一个数
for((i=1;i<10;i++))doforfor((j=1;j<=i))doecho -e \"${j}x${i}=$((j*i))\\t\\c\"doneechodone
9.半自动交互式网络配置脚本
echo -e \"\\033[1;31m will change the inet name as eth0\\033[0m\"sed -i.bak \'/^.*quiet\"$/s/quiet\"/quiet net.ifnames=0\"/\' /etc/default/grubgrub2-mkconfig -o /boot/grub2/grub.cfgmv /etc/sysconfig/network-scripts/ifcfg-ens* /etc/sysconfig/network-scripts/ifcfg-eth0 || touch /etc/sysconfig/network-scripts/ifcfg-eth0echo \'\' >/etc/sysconfig/network-scripts/ifcfg-eth0read -p \"Do you set the static or dhcp inet?(please input static or dhcp)\" SDSDd=`echo ${SD} |tr \'A-Z\' \'a-z\'`if[[ ${SDd} =~ [static]|[stati]|[stat]|[sta]|[st]|[s] ]];thenecho -e \"\\033[1;31myou will set the static inet \\033[0m\"read -p \"Please input the Ethernrt name:\" NAMEread -p \"Please input the DEVICE name:\" DEVICEread -p \"Please input the IPADDE :\" IPADDRread -p \"Please input the GATEWAY:\" GATEWAYread -p \"Please input the NETMASK:\" NETMASKread -p \"Please input the DNS1:\" DNSONEread -p \"Please input the DNS2:\" DNSTWOecho \"NAME=${NAME}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"DEVICE=${DEVICE}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"IPADDR=${IPADDR}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"GATEWAY=${GATEWAY}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"NETMASK=${NETMASK}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"DNS1=${DNSONE}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"DNS2=${DNSTWO}\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"BOOTPROTO=static\" >> /etc/sysconfig/network-scripts/ifcfg-eth0echo \"ONBOOT=yes\" >> /etc/sysconfig/network-scripts/ifcfg-eth0elseecho -e \"\\033[1;31mDo you want to set dhcp inet?\\033[0m\"read -p \"Please select yes or no?\"YNYNy=`echo ${YN} |tr \'A-Z\' \'a-z\'`if[ ${YNy} == [yes] ];thenecho \"Will set the default dhcp set\"echo \'TYPE=\"Ethernet\"PROXY_METHOD=\"none\"BROWSER_ONLY=\"no\"BOOTPROTO=\"dhcp\"DEFROUTE=\"yes\"NAME=\"eth0\"DEVICE=\"eth0\"ONBOOT=\"yes\"BOOTPROTO=\"yes\"\' > /etc/sysconfig/network-scripts/ifcfg-eth0elseecho \"dont set dhcp inet,will leave\"fifiecho -e \"\\033[1;31mnow, restart the network service!\\033[0m\"systemctl restart network || nmcli c reload ;nmcli c up eth0;nmcli d reapply eth0;nmcli d connect eth0echo -e \"\\033[1;32mDONE!\\033[0m\"
10.初始化脚本（持续完善中）
11.模拟生成百分数进度
for((i=1;i<=100;++i))doprintf \"\\e[4D%3d%%\" $isleep 0.1sdone
11.猜数小游戏
echo \"welcome to the guess number games\"NUM=$[$RANDOM%10]while read -p \"please input the number you guess\" INPUT ;doif [ ${INPUT} == ${NUM} ] ;thenecho \"you are right!\"breakelif[ ${INPUT} -lt ${NUM} ] ;thenecho \"the number is too less \"elseecho \"the number is too great\"fidone
12.国际象棋
for((i=1;i<=8;i++));dofor((j=1;j<=8;j++));dolet sum=(\"$i\"+\"$j\")%2if [ \"${sum}\" -eq 1 ];thenecho -ne \"\\033[1;43m \\033[0m\"elseecho -ne \"\\033[1;47m \\033[0m\"fidoneechodone
