Linux

1.Linux can be seen as being composed of four departments: kernel, user interface, file structure, tools2.Linux terminal can be divided into four categories: Serial terminal, physical terminal, virtual terminal, graphic terminal To view the

There are two ways of doing this:1. Command &: Background run, you shut down the terminal will stop running2. Nohup Command &: Run in the background, you will continue to run the terminalFirst, IntroductionLinux/unix the biggest advantage of the

Most of the current popular Linux file systems, including EXT3 and EXT4, use file system barrier as an enhanced security feature. It protects data from being written to the journal. However, in many cases, we do not know whether these barrier are

1 different machine copy files SCP file Login user @ Machine ip:/Directory/Sub-directory SCP filename [email protected]10.20. 130.202:/home/test/ 2 file [clip] Sync rsync Question [NET friend proposed] How do I write a command of a

1. Compress the command:Command format: TAR-ZCVF compressed file name. tar.gz Compressed file nameYou can switch to the current directory first. Both the compressed file name and the compressed file name can be added to the path.2. Unzip the command:

User rights:Drwxr-xr-x 4 root root : $ boot#权限位 hard Connections Owning user group size last modified time file/directory #R W X4 2 1User privilege bits are divided into 3 segments, corresponding to users GROUP otherRwxr-xr-x 755 Default

1. Commercial UNIX operating systems include:-At and T company developed (System V Release 4) SVR4,-The 4.4BSD, published by UC Berkeley-Dec Corporation (now HP) Digital Unix-Aix of IBM Corporation-HP-UX-Sun's Solaris-apple company's Mac OS XAll

This conversation "gcc".GCC is the abbreviation of "gnu Compiler collection", which consists of compilers of C, C + +, FORTRAN, Java, and libraries of these languages.GCC contains not only the compiler itself, but also the libraries necessary for

Talk about "mail server" this time.The mail server typically runs 2 server-side software, "SMTP servers, and"POP servers or IMAP servers.These 2 things, perhaps the people who use the mail client immediately understand. Because when setting up the

One: The installation principle of batch unattended safety using DHCP TFTP FTP and PXE technology to implement the batch installation system, first install the DHCP TFTP and FTP service on the primary server, the client obtains the IP address and

You can view the server operating system version (kernel) of the remote host without logging on to the remote host.Script Execution Prerequisites:1. Copy Check_snmp to the script execution host or install Nagios on this host;2. Keep only one IP

Installing boot Linux in a Win7 environmentUnder the Win7 system, the installation of Linux is particularly inconvenient, because the boot. INI profile is not in the XP, to join the boot option, only the use of specialized tools, which is more or

Detailed description of the find command in Linux1. find commandThe find command in linux is used to find files. It has powerful functions. You can use time, user group, file name, file type, permission, and size to find the corresponding files.2.

Linux Command kill Proficient in Linux kill commands 　　No matter which operating system you use, you will surely encounter an abnormal application that locks itself and refuses to close it. In Linux (and Mac), you can use a "kill" command to force

Linux System Performance Analysis command ps. pstree and topCommon linux performance analysis Commands include ps pstree and top. Today we will take a closer look at the usage of each command.1. psPs commands are commonly used to view processes. ps

Linux server-based performance analysis and optimization (2)I. Features of several typical applications on system resources1.1 Web applications based on static contentOne of the main features of such applications is that the majority of small files

View File Content in linux cat, more, less1. Common commands for viewing File ContentCat: displays the file content from the first line. tac: displays the content from the last line. The opposite is cat. nl: The file content and line number are

Tee command, shellTee command If you want to display the running command line output on the screen and redirect it to the file, the tee command can help you complete this task. The usage mode is as follows: [Cmd] | tee [cmd]. log How to Use the

In linux, you can view the CPU cache information.View CPU cache Information in linux 1. Check the CPU Cache level in Linux. dmesg | grep cache The instance result is as follows:   Ii. View Cache association methods View the corresponding folder

Kickstart overview 20140707,20140707Kickstart 20140707 Today, I was planning to study the plug-in development of rhythmBox and build a Xiami plug-in. As a result, I opened the release note of fedora20 and saw kickstart.   Kickstart is an