Linux

1, interprocess communication (IPC) inter-process communicationA better understanding of the concept is that inter-process communication is the transmission or exchange of information between different processes .Classification of IPC mechanisms

Sed Stream Editor Stream editorsThree large text processing tools: Grep,sed,awkSyntax: sed ' addresscommand ' file ...Address:1,startline,endline1,1002,/regexp//^root/3,/pattern1/,/pattern2/Mode 1 to mode 2 in the middle of the row4,linenumber the

Upload jmeter to test server, unzip to/home/zicheng.sun/jmeter config environment variable VI ~/.BASHRC #. BASHRC # Source Global definitionsif [-F/ETC/BASHRC]; Then. /etc/bashrcfijava_home=/data/softwares/jdk-1.7.0-67path= $JAVA _home/bin:

Download the Linux version of Foxitreader First, and then extract it as a run file with executable permissions. Direct./run perform the installation.If you want to uninstall, then to the installation directory, in the Unistall file can see point to

It is often possible for a home to use an operating system (such as Windows and Linux) for work or learning needs. You may be familiar with the file systems supported by Windwos, and may be unfamiliar with the file systems supported by the Linux

"Command": Chkonconfig"Syntax": chkconfig [Options]"Feature description": The Chkconfig command is a system service management tool in a Redhat compatible Linux distribution, which can query and update the startup state of the system services for

First you have to make sure that the format of your USB stick is fat format. (in the case of NTFS format, you need to install the NTFS-3G package,yum install ntfs-3g -y )Go to the/mnt/directory to create a new USB directorycd/mnt/MKIDR USB First

The free command displays system usage and idle memory conditions, including physical memory, interactive area memory (swap), and kernel buffer memoryParameters-B Display memory in bytes-K display memory in kilobytes-m display memory in units of

Troubleshooting Installation:1. Check if the system is on NFS Service: Service NFS Status Results display nfs:unrecognized service, stating that the system does not have NFS services installed, so installed;Note that Yum install NFS is not

After you have configured the exports file correctly, you can start the NFS server.1. Start the NFS serverIn order for the NFS server to work properly, you need to start Portmap and NFS two services, and Portmap must start before NFS.# Service

1, the creation of a 10G file system, the type of EXT4, requires the boot can be automatically mounted to a separate data/data directory;Insert a new hard disk#fdisk-L//view newly inserted hard drive#fdisk/dev/sdb//Enter FDISK built-in

NIC Configuration Address/etc/sysconfig/network-scripts/ifcfg-eth0DNS configuration Address/etc/resolv.confThe corresponding parsing table of user IP and domain name/etc/hostsConfiguration of machine name, network card startup, gateway,

First, Introduction Gprof is one of the GNU tools, it is compiled at the time of the entry and exit of each function to add the profiling code, run-time statistics program in the user state execution information, you can get the number of calls per

RPM Execution Installation packageBinary packages (binary) and source code packages (sources) are two types. Binary packages can be installed directly on the computer, and the source code package will be automatically compiled and installed by RPM.

Analyze and store logs (i)1. System Log SchemaPermanent log: The process and operating system cores need to be able to log the events that occur, which can be used for system audits and problem troubleshooting, which are stored permanently in

# #more command more command, which functions like cat, the cat command displays the contents of the entire file from top to bottom on the screen. The more command will be a page-by-page display, convenient for users to read pages, and the most

Http://blog.sina.com.cn/s/blog_63d8dad80101cn2s.html1. Uninstall Rhel's default installed Yum Package view Yum package rpm-qa|grep Yum Uninstall rpm-qa|grep yum|xargs rpm-e--nodeps 2, download new Yum package 64-bit Linux system download

Transferred from: http://blog.csdn.net/lmh12506/article/details/7753952Some time ago on GitHub opened a library, ready to implement their own thread pool, because the change of work, has not been achieved, refer to this article is ready to start to

Common Git operation skills I have been learning Git for more than a year, and some common skills are also very powerful. But sometimes I Have Some uncommon skills, I always need to go to Google, and I forget it again in the second time. Therefore,

When the Shell script calls the mongo command to pass parameters, pay attention to the quotation marks and variables. We use the shell script to complete the automatic process of building the mongodb shard cluster, which involves logging on to the