packagecom.cetc55;publicclassDome4{publicstaticvoidmain(String[]args){intnum=0;int[]array={14,124,141,24,14,124,14,1,4};for(inti=0;i<array.length;i++){if(array[i]>i){num+=array[i];}System.out.pr
packagecom.cetc55;publicclassDome1{publicstaticvoidmain(String[]args){System.out.println("halloworld");inta=100;intb=200;intnum=num(a,b);System.out.println(num);publicstaticintnum(inta,intb){intnum=a+
packagecom.cetc55;publicclassDome1{publicstaticvoidmain(String[]args){System.out.println("halloworld");inta=100;intb=80;intc=120;intd=a<b?(a<c?a:c):(b<c?b:c);System.out.println(d);
packagecom.cetc55;publicclassDome1{publicstaticvoidmain(String[]args){System.out.println("halloworld");inta=100;intb=80;intc=120;intd=a>b?(a>c?a:c):(b>c?b:c);System.out.println(d);
#!/bin/bashfor((i=2;i<=100;i++));doflag=truefor((j=2;j<i;j++));doiftest$(($i%$j))-eq0;thenflag=falsebreakfidoneif$flag;thenecho$ifidone
#!/bin/bash#字符串的运算关系a="aa"b="bb"#判断a是否等于bif[$a=$b];thenecho"$a等于$b"else[$a!=$b]echo"$a不等于$b"fi#判断变量a是否为空if[-z$a];thenecho"$a是空变量"elseecho"$a不是空变量"fi#判断变量a是否不为空if[-n$a];thenecho"$a不是空变量"elseecho"$a是空变量
#!/bin/bashsum(){num1=10num2=20echo$(($num1+$num2))}sumsum
#!/bin/bash==[-eq]!=[-ne]>=[-ge]>[-gt]<=[-le]<[-lt]
#!/bin/bash-efile检测文件(包括目录)是否存在,如果是,则返回true。-rfile检测文件是否可读,如果是,则返回true。-wfile检测文件是否可写,如果是,则返回true。-xfile检测文件是否可执行,如果是,则返回true。-sfile检测文件是否为空(文件大小是否大于0),不为空返回true。-dfile检测文件是否是目录,如果是,则返回true。-ffile检测文件
#!/bin/bashwhile:;doechoaasleep1done#!/bin/bashwhlieture;doechobbsleep1done#!/bin/bashfor((;;));doechoccsleep1done
#!/bin/bashscore=500if[$score-gt100];thenecho"分数不正确"elif[$score-ge80];thenecho"优秀"elif[$score-ge60];thenecho"及格"elif[$score-ge0];thenecho"不及格"elseecho"分数不正确"fi
useraddtest1-s/sbin/nologin
YUM安装必要软件yuminstall-ygccgcc-c++kernel-devel-3.10.0-1127.19.1.el7.x86_64autoconfautomakelibtoolncurses-develncurses有问题再执行rm/var/run/yum.pid-f建立文件夹mkdir/root/hky复制源码到/root/hky/cd/root/hky解压源码tar-xvfcmat
rpm-ivhmysql-community-client-plugins-8.0.22-1.el7.x86_64.rpmrpm-ivhmysql-community-common-8.0.22-1.el7.x86_64.rpmrpm-ivhmysql-community-libs-8.0.22-1.el7.x86_64.rpmrpm-ivhmysql-community-libs-compat-
查看VSFTPD是否安装rpm-qa|grepftp如没安装执行以下命令yuminstall-yvsftpd再次查看安装结果rpm-qa|grepftp查看FTP是否启动启动systemctlstatusvsftpd启动vsftpdsystemctlstartvsftpd设置vsftpd开机启动systemctlenablevsftpd安装虚拟用户软件和认证模块yuminstall-ypamlid
查看rpc和nfs是否安装rpm-qa|greprpcbindrpcbind-0.2.0-47.el7.x86_64rpm-qa|grepnfsnfs4-acl-tools-0.3.3-19.el7.x86_64nfs-utils-1.3.0-0.61.el7.x86_64libnfsidmap-0.25-19.el7.x86_64查看rpc和nfs服务是否启动systemctlstatusrpc
#!/bin/bashfor((i=1;i<=9;i++));dofor((j=1;j<=i;j++));doecho-n"$i*$j=$(($i*$j))"doneechodone
#!/bin/bahsforiin{1..10};doa=$(($i%2))b=$(($i%3))iftest$a-eq0-o$b-eq0;thenecho$ifi
#!/bin/bashforiin{1..10000};doecho"同学们好">>passwddu-hpasswd|awk-F'k''{print$1}'|awk-F'.''{print$1}'sizeme=`du-hpasswd|awk-F'k''{print$1}'|awk-F'.''{print$1}'`iftest$sizeme-gt100;thenecho"文件超过100k
#!/bin/bashnum=1case$numin1)echo"你选择了1"2)echo"你选择了2"3)echo"你选择了3"*)echo"你没有输入1-3之间的数字"esac
#!/bin/bashsum=0foriin{1..100};doletsum=$sum+$idoneecho$sum
#!/bin/bashflag=truefor((i=1;i<=3;i++));doecho"第$i次机会"read-p"请输入数字"numif[$num-gt88];thenecho"数字大了"elif[$num-lt88];thenecho"数字小了"elseecho"猜对了"flag=falsebreakfidoneif$flg;thenecho"三次机会已用完"fi
Copyright © 2005-2024 51CTO.COM 版权所有 京ICP证060544号