架构之美

使用JAVA开发，跟linux的关系可谓非常密切。下面就jdk在linux下的安装做个总结1、在sun官方网站下载jdk的linux版本，上传至虚拟机里面 cp jdk文件名字 你指定的目录 su root 和 su -root区别不小，前者可以获得root的权限，后者可以设置环境变 量，增加新的用户等。2、vi /etc/profile 设置...

enquiry mysql version in centos linuxyum list installed | grep mysqlyum -y remove mysql-libs.x86_64enquiry mysql version in yum repositoryyum list | grep mysql oryum -y list mysql*install my...

uname -aview all the information of the linux  cat /proc/cpuinfo dmesg |grep CPUfind the cpu info file /bin/ls  find the bit of the system lsb_release -afind the release ver...

service iptables status1) 重启后生效开启： chkconfig iptables on关闭： chkconfig iptables off2) 即时生效，重启后失效开启： service iptables start关闭： service iptables stop...

[root@linuxstudy testshell]# cat s2.sh #!/bin/shexport name=jackprintf "p0=%s \n" "$0"echo "p1="$1echo "p2="$2echo $nameecho "pid="$$echo "all param num:"$#echo "all param:"$@e

[root@linuxstudy testshell]# cut -d: -f 1 /etc/passwdrootbindaemonadmlpsyncshutdownhaltmailuucpoperatorgamesgopherftpnobodydbususbmuxdvcsartkitavahi-autoipdabrthaldaemongdmntpapachesaslauthpostfixpu...

[root@linuxstudy testshell]# jobs -l[1]+  2568 Running                 nohup python pytest1.py &[root@linuxstudy testshell]# bg %1-bash: bg: job 1 already in background[root@linuxstudy testshell]...

[root@linuxstudy sh]# cat ./s1.sh #!/bin/bashfilelist=$(ls ~/)echo "-----------begin------------"for file in $filelistdoecho $file if [ -f ~/$file ] then echo "this is...

awk -F ',' '{for(i=1;i