Linux

-----------------------------------------Gorgeous split Line-------------------------- . tar.gzDecompression: Tar zxvf FileName.tar.gzCompression: Tar zcvf FileName.tar.gz dirname The Solaris decompression *.tar.gz may be somewhat different, and

1. In the general operation of Linux has LS mikdir rmdir VI operation The general operating syntax for Hadoop HDFs is to view Hadoop and directory files for Hadoop fs-ls//** **/ Hadoop FS-LSR//*** recursively view the file directory of Hadoop

Use VI command on Linux to modify a file content, found that can not save, each time the use of ": q!" command can exit normally but use ": wq!" When the command saves the file and exits, a message appears: E212:can ' t open file for writing press

Company game Operation needs, a new set up SVN and configured a bit to submit the function of automatic mail delivery, a few key steps to forget the content, for useful reference to the students ha 1. Ready to install Package: Apr-1.3.8.tar.gz Apr-

[Root@epddb log]#[Root@epddb log]# ntpdate 10.154.8.2006 Sep 09:35:09 ntpdate[30210]: The NTP socket is in use, exiting[Root@epddb log]# [Root@epddb init.d]# pwd/etc/rc.d/init.d[Root@epddb init.d]#./ntpd stopShutting down NTPD: [OK][Root@epddb init.

Reference

To install Ruby on Rails, I'm going to install an Ubuntu Linux Official Download Address Domestic Fake official Downloads An ISO file was downloaded Then install it in VMware Player Prompt to enter a non-root username and password in

Building a Linux distribution of its own is a dream for every free open-source software enthusiast. It was once a very difficult thing to do, a Linux distribution is also rare, can do a Linux distribution has been extremely glorious things. But, by

introduction of Latex LaTeX (LaTeX, transliteration "Lateh") is a typesetting system based on Tex, developed by the American computer scientists Leslie Lambert (Leslie Lamport) in the early 1980s, using this format, Even if the user does not have

The purpose of using a timer is to perform a task periodically, or to perform a task at a specified time. In order to achieve this goal, there are generally two common and more effective methods. One is using the three timer inside Linux, and the

First, network monitoring tools 1. Linux various ways to view network card traffic: http://jasonyong.blog.51cto.com/47753/174197 2. NetPerf: Network Throughput/Latency: Http://www.ibm.com/developerworks/cn/linux/l-netperf/index.html?ca=drs 3.

The following text references from http://www.yuanma.org/data/2006/0918/article_1560.htmI. Overview In traditional programming concepts, a process is compiled locally by a programmer and can only be limited to a piece of code that runs

Documents written in Notepad under Windows are different from those written under Linux, Vim, or gedit. For example, the SH script written under Windows can be executed under Linux for error. Workaround: The reason is: Windows newline symbol is "\ r

Turn from: http://cloud.csdn.net/a/20120228/312507.html It is well known that open source operating systems (such as UNIX and Linux) have achieved great success. One important reason for the popularity of Linux may be that its distribution can meet

Non-blocking IO and blocking IO: In network programming, the concept of blocking IO and non-blocking IO is encountered for a network handle, and here is a description of the two sockets first:Basic concepts: Blocking IO:: The blocking mode of the

Linux under TCP,UDP and broadcast and multicast Communications (Code encyclopedia) TCP, UDP, broadcast, multicast client server code link addresses are (for free): TCP Code: http://download.csdn.net/detail/huangminqiang201209/4860661UDP Code: http:

Network Connection Program SSHPowering Linux What is SSH 　　 SSH(Secure Shell) is a secure network connection program, it allows you to connect to other computers on the Internet, execute programs on other computers, copy files between

The Keil uvision (MDK v4.7) was run on Ubuntu 12.04LTS a few days ago. The process is also smooth, sharing the next steps to the needs of friends. A screenshot of the previous installation (I'm using the old-fashioned Gnome classic interface) to

Self-made disc guided automated installationFirst of all we need to understand which documents are needed, and we list the following① need a folder to store the files, in the future to package this directory into an ISO② Preparing the Kickstart file

UseView system memory (physical/virtual/cache/shared) usageUsagefree [-b | -k | -m | -g | -h] [-o] [-s delay ] [-c count ] [-a] [-t] [-l] [-V]Common options Options meaning Description -B Unit byte