Linux

Analysis on Linux PAE of kernel memory management The early Intel processors used 32-bit physical addresses from 80386 to Pentium, which theoretically allowed access to 4GB of RAM. However, large servers require more than 4GB of RAM to run

Linux GCC pre-compilationCommand: GCC-E test.c-o test.i Precompiling mainly completes the following functions:1. Delete all comments "//" and "/**/";2. Delete all the "#define" and expand all the macro definitions;3. Handle all conditional

Linux/centos address Tomcat Memory Overflow 2014-10-10 I say two sources: Doiido collection I want to submit the Tomcat itself cannot run directly on the computer, it needs to rely on the operating system and a Java virtual machine. The JVM

Original: http://hi.baidu.com/tim_bi/blog/item/63728b8b613f33dcfd1f10dd.html The 3.11 section of Advanced Programming in UNIX environments describes atomic operations, one of which is adding data at the end of a file. The article said that if

1. Install VSFTPD XML code Yum Install VSFTPD 2. Start/reboot/shutdown VSFTPD server XML code [root@localhost ftp]#/sbin/service vsftpd Restart shutting down vsftpd: [OK] Starting vsftpd for VSFTPD: [ OK] OK indicates the reboot was

Linux view kernel version and vendor version1. View Kernel Version command:1) [root@q1test01 ~]# cat/proc/versionLinux version 2.6.9-5.elsmp (bhcompile@decompose.build.redhat.com) (GCC version3.4.3 20041212 (Red Hat 3.4.3-9.el4) #1 SMP Wed 5 19:30:39

The Linux software vendor Novell has alerted its SuSE users that a major security vulnerability was found in Linux kernel 2.6 that could cause the system to crash. As we all know, the Linux kernel 2.6 was completed at the end of last year. The new

The startup, shutdown, and error tracking of Tomcat services under Linux, using Putty to remotely connect to the server, typically starts the shutdown Tomcat service in several ways: start the Tomcat service Mode one:Start directly./startup.shMode

A few days ago I had a zookeeper+dubbo environment at home. Here's how to install zookeeper under Linux. The Linux environment in this article is CentOS6.5.preparatory workWe need to do two things first before installing zookeeper. The first is to

CD Switch Directory Dir Display directory contents LS Display directory content Cat displays file contents, suitable for small files Less display the contents of the file, can be read back and forth More split screen display file content, not to

The first step: Change port = 8080 to port =80 in the configuration file/etc/tomcat7/server.xml Reboot TOMCAT7, still unable to access localhost in browser Open the log file/var/log/tomcat7/catalina.out and you will see the following

1, resin4.0 installed and configured under Linux     (1), Linux Environment configuration JDK environment variables     Export java_home=/home/homer/eclipse/jdk1.6.0 _22     Export JRE_HOME=/HOME/HOMER/ECLIPSE/JDK1.6.0_22/JRE     export classpath=.:

My installation background: First installed in the Ubuntu system MySQL, no installation apache2 1, using sudo apt-get install phpMyAdmin During the installation, you are prompted to select the Web server: You can choose Apach2 or lighttpd, and I

installation of two installation methods Yum installation (recommended) yum install lrzsz-y Note: After installation, you can directly use RZ sz compile your own installation for CentOS x.x version lrzsz installation configuration Mkdir-p/usr/src/

After using SECURECRT to link a virtual machine, there is a very useful function, that is, the left key to select can be copied, click the right button can be pasted, and then reinstall the system, after reinstalling the software found that the

-------------Installation--------------1. Select a Custom installation:2. Select the Hardware compatibility standard3. Choose whether to have VMware install the operating system4. Select the type of operating system that will be installed (64-bit

Linux 7th DayTime: 20180723Bash featuresCurly braces unfold{001..20..2}Command completionTag option completion (CENT7 support Bash-complement)Command line HistoryHistroy ~/bash_history!! Repeat the previous command!-1 repeat the previous commandCtrl+

5th Day of Linux LearningTime: 20180720Order of execution of commandsAlias internal Command Hash PASHWhen the alias and command are the same, you can add \ or ' CMD ' in front of the command to use the command itselfCancel and End command execution:

I. Transmission of documents1. Order: SCPSCP file [email protected]:/dir # #把当前系统目录下的文件file复制到另一个系统目录下SCP [email Protected]:/file dir2. Command: Rsync # #数据的远程同步, can speed up the transfer rate Common parameters:-R # #同步目录里面的内容-P # #同步权限-D #

Long time no more, today is more than this issue of Linux system, the main installation is one of the common Linux systems: Ubuntu (Bantu) system, this system and the installation of CentOS 7 is similar, (I do not take the virtual machine method to