Linux

To view file permission statements:In Terminal input:Ls-l xxx.xxx (xxx.xxx is the file name)Then there will be similar messages, mostly these:-rw-rw-r--A total of 10 digitsWhich: the front one-represents the typeThe middle three rw-represents the

LN is another very important command in Linux, its function is to create a file in another location with a non-link, the most common parameter of this command is-s, the specific use is: Ln–s source file Destination file.When we need to use the same

UNIX has been a 35-year history. Many people think it began in the Middle Ages, the Middle Ages is relative to the generation and development of computer technology. Over the past time, UNIX and its sub-branches of Linux have collected many

I. File and directory PermissionsIn a Linux system, users can have access to each file or directory, which determines who can access and how to access those files and directories.1. Introduction to file PermissionsIn a Linux system, each user has

Linux under View hard disk model, size and other information, the machine does not have a raid relationshipOne, Normal mode (the drive does not do disk array)1, fdisk-l view your hard drive number, such as SDA,SDB, etc.2,

IntroductionAwk is a powerful text analysis tool, with the search for grep and the editing of SED, which is especially powerful when it comes to analyzing data and generating reports. To put it simply, awk reads the file line-by-row, using spaces as

Linux under wildcard characters commonly used to search for files Ls,findSymbolic meaning* represents any character of any length? Represents any single character[] represents any single character within the specified range[-] such as [A-z]

Edit/etc/crontab File Configuration cronCron service every minute not only to read all the files within/var/spool/cron, but also to read a/etc/crontab, so we configure this file can also use the Cron service to do something. The crontab

Recently the project to use a call Ecflow, Baidu, found little information, but fortunately there is a help document, the address is:Https://software.ecmwf.int/wiki/display/ECFLOW/HomeOfficial explanation:Ecflow is a client/server workflow the

Linux Build local time serverPre-Experiment Description:Lab Machine: VMware 10Experimental system: CentOS6.6Experimental purpose: To make all CentOS systems on VMware the same time, convenient to do cluster experiment;#1, compile and install NTP (on

Friendship Help: Bo Master to participate in the 2014 blog Star selection, please support a lot Oh! Click here for the vote link!Samba, a bridge that connects Unix camps and Windows systems. Install the Samba server on a Unix-like system to allow

Busy a few days, finally can let Ds18b20 in their own Development Board Linux system ran! Although Ds18b20 is not a new thing, but think of a confidant can add modules to the Linux system or a little chicken cold!Although the hardware resources are

 Original Address: http://blog.solrex.cn/articles/packaging-1-src.html1. One of the application packaging Technologies (source code)I believe many friends have written their own small program for the convenience of doing something (like I wrote

TCPIP Three-time handshakeTCP (transmission Control Protocol) transmission protocolTCP is the host-to-host layer of the Transmission Control Protocol, providing a reliable connection service, using three-time handshake confirmation to establish a

Linux File Permission forced bit and adventure bit detailsIn linux, apart from reading, writing, and executing file permissions, file permissions also have special permissions for forcible bit and adventure bit.In linux, the File Permission is as

Master Boot Record MBR, Boot Record mbr Master Boot Record(Master Boot Record, abbreviated as MBR), also calledPrimary Boot SectorIt is the first sector that the computer must read when accessing the hard disk after it is started. Its

CentOS installation and configuration of minicom (serial port to USB)1. Install minicom and the file transfer Tool Sudo yum-y installminicom lrzsz2. Check whether your computer supports usb-to-serial communication before using the serial port. If

OpenVPN construction and related configuration in CentOS6.3 I. background Because the company does a lot of business, it is divided into network companies and other business companies, that is, several companies are separated, not in the same place,

Net-SNMP installation and configuration Install Download the latest version at http://www.net-snmp.org/download.html Wget http://sourceforge.net/projects/net-snmp/files/net-snmp/5.6/net-snmp-5.6.tar.gz Tar-xvf net-snmp-5.6.tar.gz Cd net-snmp-5.6 .

Solve the problem that Nginx logs cannot obtain the remote access ip Address The company has an application where the backend Web uses Nginx. All Nginx requests are forwarded by the front-end proxy. All the variables used to obtain the remote ip in