Linux

Each file or directory in Linux contains access rights that determine who can access and how to access these files and directories.by setting permissions, you can restrict access from the following three types of access: Allow only the user to

1. Change the user group and owner of the directoryChown commandSuch as:You can see that both the owner and the owning group of Test1 and Test2 are root, whereThe third field is a description of the directory owner,The fourth field is the group

First, take a look at the first-level directory structure of Linuxi:Ls:　　/: represents the root directory, the file system entry, and the highest level directory.　　bin and Sbin: command to save the directory, Bin is normal user can, Sbin is the root

FAAC1.28:http://www.audiocoding.com/downloads.htmlHow to compile:1../configure--host=arm-hisiv100nptl-linux--prefix=/home/ssy/lib2.make3.make InstallOptimizationWithout changing the source code, the FAAC memory consumption is very high, each audio

MV Rename or moveThrough the which command to view the absolute path of the MV command, found that the MV is an alias, the actual command is mv-i,-i means to ask for confirmation650) this.width=650; "src="

NFS, a networked file system (network filesystem) that allows computers in a network to share resources across TCP/IP networks. In an NFS application, a local NFS client application can transparently read and write to files located on the remote NFS

One, view existing memory and swap# free-mTotal used free shared buffers CachedMEM:2026 1931 95 0 15 1789-/+ buffers/cache:127 1899swap:3074 2 3071Second, create a 2G file with the DD command (2g=1024*1024*2=2097152)#dd If=/dev/zero of=/var/swapfile

The earliest instant communication in the history of network commands1 Write LinzhilingContentCtrl+d EndSuch a letter is written out, note: Only users can send the online2wall (Write All)Write to all the users3ping commandPing 192.168.1.1Note: The

1 VMware system Installation and useIt is recommended for beginners to use this software, do not use dual systemMultiple environments can be used on a single computerVirtual machines and Windows can do network communicationHardware environment can

Overview:Originally did not want to write this blog, because the content is not rich, technical is not so avantgarde, but thought may also have a lot of friends will also encounter with me the same problem, then take some time to tidy up. Hope can

One, for Windows1, the preparation of the JDK can be downloaded directly on the website, you can also link:Http://pan.baidu.com/s/1qW0XiJM (x64)Http://pan.baidu.com/s/1eQzpGaQ (x32)2. Click Jdk-7u67-windows-x64.exe or Jdk-7u75-windows-i586.exe to

"Device eth0 does not seem to be present, delaying initialization", eth0delaying The network adapter cannot be found when the Red Hat Enterprise Linx is cloned on the Virtual Machine Vmware. As shown below, if you start the network service in the

CentOS file search commands File SEARCH CommandWhich [command name]Function: displays the directory of the System Command (absolute path)$ Which lsWhereis can display Command help information, help file description stored information Find-common

Common redis operation commands and redis operation commands Operation-related command connectionQuit: disconnect)Auth: Simple Password AuthenticationPersistenceSave: synchronize and save data to the disk.Bgsave: asynchronously saves data to the

In CentOS, set your own programs to automatically start when started 1. Add the Startup Program command to the/etc/rc. d/rc. local file. For example, set httpd to be started upon startup. #!/bin/sh## This script will be executed *after* all the

File in linux, document Operation Command (1) Open a directory (enter this directory): cd [path] Create document: mkdir [file name] Delete a directory (only empty directories are allowed. to delete the entire directory, You need to delete it one

Add a new hard disk to CentOS Connect the hard disk to the server, start linux, and log on as root.For example, if I add a new SCSI hard disk, We need to divide it into three areas: # Fdisk/dev/sdb enters the fdisk mode: Command (mforhelp): p //

Configure tomcat in Centos6.2 Here I am using tomcat6, I am using the server version of Centos, The premise is that JDK is installed and configured. First, use samba to compress my tomcat package, Copy the file to the shared folder and move it to

Include search path in linux When writing c and c ++ code, you must first include necessary library files. When using library files, anyone who writes c may be jitters. However, it is not known how to introduce include files. First, the header

Problems with using gdb under linux-ubuntu14.04 Problem: (Gdb) list No symbol table is read. Use the "file" command. The reason is that there is no symbol table in the executable file. Why is there no symbol table? Because the symbol table is