Linux

Linux system files have three main time attributes, CTime (change times), Atime (Access Time), Mtime (Modify). These three time is easy to confuse, ready to learn more about Linux children's shoes please distinguish between the threeatime:access

We have used the virtual machine, it can let save a running system state, the technology used here is checkpoint, in the future can also be restart, but this is for the entire system, it is possible to only checkpoint a process, this direction

Section III File operations File attribute Ls–al (the first character of the filename is. for hidden files)Number of connections: How many file names are connected to the secondary node (i-node)Display the full time format: "Ls-l–full-time"

Play Linux within storage management-free　　The free command displays the idle, used physical memory and swap memory in the Linux system, and the buffer used by the kernel. In Linux system monitoring tools, the free command is one of the most

When a Linux system is occupied by one process, it cannot handle requests from other processes. The remaining requests waiting to be processed must wait until the CPU is idle. This time, the system will become very slow. The following commands will

Reprinted from Http://www.jb51.net/os/RedHat/1307.htmlThe Linux Find command searches the directory structure for files and performs the specified actions .The Linux Find command provides quite a lot of search criteria and is powerful. Because find

1, STEP1 preparation Isolinux.bin and working directoryAdd a subdirectory to the directory where you are preparing the ISO, such as isolinux/, and then put the isolinux.cfg and a boot media isolinux.bin that isolinux the same as all discs.

Remote Authentication Dial-up User Service (Remote authentication Dial in User Service, RADIUS) is the Network access server ( NAS) and the centralized storage of authentication information between the RADIUS server transfer authentication,

Ext.: http://www.vpsee.com/2014/09/linux-performance-tools/There are a lot of performance tools on the Linux platform, a dazzling, long-term groping and experience finding the best thing to use is the proven, simple gadgets. Brendan D. Gregg, a

Transferred from: http://blog.csdn.net/stormbjm/article/details/90861631, add the user, first with the AddUser command to add a normal user, the command is as follows:#adduser TommyAdd a user named Tommy#passwd Tommy//Change password changing

1. checkout files to a local directory svn checkout Path (path is a directory on the server)For example: SVN checkout svn://192.168.1.1/Pro/DomainShorthand: SVN co2 . Add a new file to the repositorySVNAddfileExample: SVNAddtest.php (add

Linux The clock is divided into the system clock and the hardware (Real time clock, or RTC) clock. The system clock is the clock in the current Linux kernel, and the hardware clock is a battery-powered clock on the motherboard that can be set in the

Http://www.cnblogs.com/hanyan225/archive/2010/10/28/1863854.html1, ConceptDMA is a hardware mechanism that allows two-way data transfer between peripherals and system memory without the involvement of the CPU. The use of DMA can be the system CPU

1, the following is the sample code:[CPP]View Plaincopy #include #include #include #include #include Module_license ("Dual BSD/GPL"); static char *version = "2.0.1"; static int My_match (struct device *dev, struct

When we develop, we often count some access logs, the URLs in the access log are huge, and many are duplicates. In the URL, for example, the URL appears in the first 5 frequency of the number of URLs, and the number of occurrences in descending

The version of Rdesktop that comes with Ubuntu 14.10 's software source is 1.7 and cannot be connected to WIN10 's remote Desktop.Google a bit, rdesktop version 1.8 is a remote desktop that can be connected to WIN10. Ubuntu 15.04 version is likely

Install yum in CentOS and select and introduce the source Two Methods for configuring yum Source Because the redhat yum online update is charged, it cannot be used if it is not registered. to use it, you need to uninstall the redhat yum, restart the

Linux Kernel Analysis (4) ---- Process Management | network subsystem | Virtual File System | driver introduction, linux ---- Linux Kernel Analysis (4) I haven't updated it in two days. I analyzed the linux memory management subsystem in the last

Nagios monitoring LINUX/var/log/message scriptNot easy to write #! /Bin/shSTATE_ OK = 0STATE_WARNING = 1STATE_CRITICAL = 2STATE_UNKNOWN = 3Currdate = 'date | awk' {print $2, "*", $3 }''If ['/usr/bin/sudo tail-20/var/log/messages | grep "$ currdate" |

How to install Ghost on Ubuntu Server 14.04 LTS Ghost is an excellent blog platform with beautiful design, easy to use, and completely free of charge. It is also an open-source software with source code shared on github. By January 2014, we can feel