Linux

Prior to the first knowledge of Linux, the Linux system installation of the choice of partition, a little did not understand, resulting in a few times can not be installed next, so calm down, dedicated to take time to study this knowledge;The

In the Linux system, we will often use Linux to view the user's commands, here we have some of the commands summarized, a total of 7, and do a detailed explanation, in order to give you a more in-depth understanding, then let us look at these

With this configuration, mom doesn't have to worry about my mistakes anymore.In the ~ next. BASHRC or. Bash_profile JoinMkdir-p ~/.trashalias rm=trashalias r=trashalias rl= ' ls ~/.trash ' Alias Ur=undoundo () {mv-i ~/.trash/[email protected].

shutting down the firewall from the configuration menu is not working, simply do not install the firewall at the time of installationTo view the firewall status:/etc/init.d/iptables StatusTo temporarily turn off the firewall:/etc/init.d/iptables

System Environment: CentOS 6.5Installing SVN's software subversion[email protected] ~]# Yum install subversion-yCreate a new SVN user, authorize the SVN service[Email protected] ~]# useradd svn [[email protected] ~]# passwd svn #设置密码Create an

BackgroundToday, an outgoing mail server encountered a failure, resulting in all outgoing mail can not be sent, and then thought to use the intranet mail server directly out, but one of the servers can not ping out of the network, such as: Ping smpt.

1, first of all ensure that your network is well-equipped to spell through Ubuntu, and then check the SSH service situation.Ubuntu does not have the default SSH service installed, if you link ubuntu via SSH, you need to manually install

Methods of partitioning and merging files under LinuxCutting and merging files can be done with split and cat under Linux. Here are some examples to illustrate.1. File CuttingThere are two types of file cut modes:Text fileBinary mode.1.1 Text

Minus All O user rightschmod o-x/bin/*chmod o-x/sbin/*chmod o-x/usr/bin/*chmod o-x/usr/sbin/*chmod o-x/usr/local/bin/*Give o user the necessary permissionschmod o+x/bin/suchmod O+x/bin/bashchmod o+x/usr/bin/idchmod O+x/bin/grepchmod

First, prepare Download the new jdk:http://www.oracle.com/technetwork/java/javase/downloads/index.html All versions please poke: http://www.oracle.com/technetwork/java/archive-139210.html Second, installation and configuration first of all, in the

Linux calculator bc, linux calculator bc The bc calculator is a built-in calculator for linux, which is easy to use. OPTIONS-H, -- helpPrint the usage and exit. -I, -- interactiveForce interactive mode. -L, -- mathlib (commonly used. Some common

Linux Maximum thread count limit and current thread count query, linux thread 1. Summary system restrictions:/Proc/sys/kernel/pid_max # Check the maximum number of threads supported by the system, which is generally large, equivalent to the

Install the Openfire service in CentOSThe system is the new installation system, the version is Centos 5.6 x86 synchronization Beijing time # ntpdate 210.72.145.44 install jdk, add the execution permission # chmod + x jdk-6u35-linux-i586.bin to

Install WebBench in CentOS for web performance testing. Webbench is a famous website stress testing tool. Compile and install:1. wget http://www.sfr-fresh.com/unix/privat/webbench-1.5.tar.gz2. tar zxvf webbench-1.5.tar.gz3. cd webbench-1.54. make &

Install the vpn Client pptpclient in centos Pptpclient official http://pptpclient.sourceforge.net/howto-diagnosis.phtml#pppd_options 1. Use yum to install ppp and pptp packagesYum-y install pppYum-y install pptpIf yum does not have pptp, go to the

Create OpenResty RPM package in Centos Create the rpmbuild directory: mkdir -p ~ /rpmbuild/ {SOURCES,SPECS,SRPMS} Download OpenResty source code: wget -P ~ /rpmbuild/SOURCE http: //openresty .org /download/ngx_openresty-1 .4.3.4. tar .gz Create a

Ubuntu14.0464-bit JDK1.7 Installation Ubuntu14.04 64-bit JDK1.7 Installation 1. Create a folder Youhaidong @ youhaidong :~ $ Sudo mkdir/usr/lib/jvm 2. decompress the file Youhaidong @ youhaidong :~ $ Sudo tarzxvf

Linux Regular Expression Basic Regular Expression ^ The string to be searched by word starts with word Grep-n "^ a" regex.txt find the row whose first character is a and output the row number Word $ the string to be searched ends with word Grep-n "a

Simulate Network Packet Handling latency for specified IP Ports in Linux When compiling network applications, we usually test and debug the network on a LAN or even a local machine. Is there a way to simulate a complex Internet

Partitions and file systems in Linux 1. file names of each Hardware Device in Linux 1. File Name of the IDE Hard Drive in Linux:/dev/hd [a-d] (a-d is exactly four. This is the reason for the following) Explanation: for IDE interfaces, since an IDE