Cloud Applications

From getting started to being proficient in hacker linux, Ma Hao handled the VPN server agenda in three minutes :. VPN introduction. how VPN works. VPN data transmission protocol. VPN server construction case: the distance between departments of a

SD card mounting file system: VFS: Cannotopenrootdevice & quot; mmcblk0p2 & quot; solve the problem of using the initramfs file system. linux can run normally and read and write SD cards normally. However, if it is mounted to the SD card, the disk

Installing and configuring net-analyzer/net-snmp-3.5.7_rc1 to monitor Linux operating systems with AT-SNMPc requires installing the snmp service on Linux. For gentoo, the snmp service is provided by the net-analyzer/net-snmp software package. The

Linux Terminal command line prompt art-PS1 advanced words not to mention, first glance at my command line prompt (a little big): the command line in the figure explains: calendar [calendar date/lunar date and time] calendar [number of directories

Linux performance tuning 5: tuning an important role in soft raid storage. RAID independent redundant disk arrays are classified into two types: raid card-based hard raid (hardware implementation, high speed, suitable for large applications), system-

Talking about linux performance tuning 9: changing system default limits; talking about linux performance tuning 8: Removing unnecessary overhead http://www.2cto.com/os/201307/228393.html After reading the first two articles, we are trying to save

The liunx command chown is used to change the owner of a specified file to the specified user or group chown. the user can be a user name or user ID; A group can be a group name or group ID. files are separated by spaces to change the permission

/Etc/security/limits. how conf works 1. limits. conf description limits. the conf file is actually the pam_limits.so configuration file in LinuxPAM (plug-in Authentication Module, pluggableauthenticationmodumodules), which breaks through the default

Release the UbuntuLinux system cache and increase the available memory space. a desktop memory has a total of 3 GB, but the free memory is only 200 MB, which cannot meet the jvm requirements of scala. Use the top command to view the real free memory.

Linux binds a domain name, such as modifying the hosts file to bind a domain name IP address in windows. Windows linux binds a domain name hosts file. in windows, you only need to modify the C: WindowsSystem32driversetchostshosts File (open it with

In UNIX systems, everything except processes is a file, which is maintained by Linux. To facilitate file management, Linux also introduces the concept of directories (sometimes called folders. Directory enables file classification and management,

Inux redirection refers to modifying some of the original default items and changing the default execution mode of the original system commands, for example, if I don't want to see the output on the monitor, but want to output the inux redirection

Sysctl-P error: & quot; net. bridge. bridge-nf-call-arptable When Installing openvz today (installation tutorial: http://blog.haohtml.com/archives/14724), after modifying the kernel parameters, run 1 Sysctl-P Prompt 1234567

Cobbler Deployment Guide-Cobbler installation operating system VI. yum repository configuration management 6.1 First import the system Image Refer to step 4. import the system image. after importing the image, perform the following steps: 6.2 add an

We know that apache has a common function. as long as the rewrite module is supported during apache compilation, we know that there is a common function in apache. to turn to htaccess, you only need to specify that the rewrite module is supported

To call external commands in PHP, you can use, 1 & gt; to call specialized functions, 2 & gt; reverse quotation marks, 3 & gt; popen () to open the process, three methods 1. calling external commands in PHP describes how to call external commands in

I really don't know how to write this article name about trap and expr in shell, so I just wrote such a strange name. It is about trap and expr. Trap and expr are two commands in shell, which should be familiar to everyone, that is, the four

Okular, the best pdf reader in Ubuntu, today recommends two pdf readers Okular and Foxitreaderforlinux. The former is more powerful, the latter is faster to load, and better to support Chinese! So I recommend using these two software in ubuntu !! W..

In linux, the boot service is automatically started. [root @ localhost ~] # Chkconfig -- list displays the services that can be automatically started upon startup [root @ localhost ~] # Chkconfig -- add *** add auto start upon startup *** Service

Today, I wrote a shell script and reported an error during execution. the script content is simple and only for testing: Shell Code :#! /Bin/shecho & quot; testshell & quot; the specific error message is as follows: Shell code: [root @ localhosttest]