Linux

The following shows the usage of the current memory.-M indicates that the content is displayed in MB bytes. Let's take a look.$ Free-mTotal used free shared buffers cachedMem: 1002 769 232 0 62 421-/+ Buffers/cache: 286 715Swap: 1153 0 1153Part 1

Modify the default Interface at startup Modify/IETC/inittab Randomly launch a project Add/etc/rc. d/rc. Local to this file. Netstat-anp | grep check port activity, PS-Ef | grep view the process View the random Startup Process in chkconfig

IfconfigView the IP configuration of the Local Machine Ifconfig eth0 (Note: Corresponding Nic name) new IP netmask 255.255.255.0/Etc/rc. d/init. d/network restart Restart serviceMethod 1 for modifying the IP address of the Local Machine Directly

Now there are five devices: pC1 connected to rout1, rout1 connected to rout2, rout2 connected to rout3, and rout3 connected to PC2. The topology is shown below: □---- ○ ---- □ PC1 rout1 rout2 rout3 PC2 The static IP addresses of the five

Http://soft.yesky.com/SoftChannel/72350111375556608/20030820/1722837.shtml When learning about the operating system, we all know that the file system is an important part of the operating system. There are many types of file systems, such as

Download the required installation file: Wget http://www.oberhumer.com/opensource/lzo/download/lzo-2.02.tar.gzwget http://swupdate.openvpn.org/community/releases/openvpn-2.2.1.tar.gz  Install lzo: Tar zxvf lzo-2.02.tar.gzcd

1. features: Only one thread can occupy the read/write lock in the write mode at a time, but multiple threads can simultaneously occupy the read/write lock in the Read mode.Because of this feature, When the read/write lock is in the write

Hfsc Scheduling with Linux 2005 Klaus rechert, Patrick mchardy 2006 Martin. brown (translation) for Complex Traffic Shaping scenarios, hierarchical algorithms are necessary. current versions of Linux support the algorithms htb and hfsc. while htb

Switch Su to super Administrator Exit to exit the user Clear interface content CD to the personal directory CD/home to go to the home directory CD .. back to the upper-level directory CD... returns the last two levels of directories. PWD

1. Man provides help explanations for familiar or unfamiliar commands For example: man ls, you can view the LS-related usage. Note: Press Q or Ctrl + C to exit. in Linux, you can use Ctrl + C to terminate the currentProgramRun. 2.

Address: http://javaangle.blog.163.com/blog/static/1079330652010111374551387/ 1. Test EnvironmentUbuntu10.10/jdk1.6u212. Installation Process2.1 Download the JDK Installation File. Download the bin format here.2.2 copy the installation file to/home/

The attributes of a Linux file or directory mainly include the node, type, permission mode, number of links, user and user group to which the file or directory belongs, recent access or modification time, and so on. The details are as

Clear free cache by modifying drop_caches of Proc System$ Echo 3>/proc/sys/Vm/drop_caches Drop_caches detailed documentation is as follows:Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that

Abstract: The concept of dynamic library exists in Windows and Linux systems. Dynamic library can effectively reduce the program size and save space, improve efficiency, increase program scalability, and facilitate modular management. However,

Today, I want to install an Oracle database for testing. To learn about the Linux operating system, I want to format all the idle desktops and reinstall Linux. However, there are many problems encountered during the actual operation. Record them

  Shared Memory is a memory area reserved by the system for communication between multiple processes. The/proc/sys/kernel/directory records some restrictions on the shared memory, such as the maximum number of bytes in a shared memory area shmmax,

In ubuntu, garbled Chinese characters are often displayed in flash, such as QQ games and Douban music. In fact, you only need to modify the linefeed font. Modify the file/etc/fonts/CONF. d/49 = sansserif. ConCode Code highlighting produced by

In Linux, the simplest screenshot tool is import. Several common import commands are introduced to you: 1 import mypicture.jpg Then you can use the range selected by the mouse 2 sleep 5; import mypicture.jpg Wait for 5 seconds and then take the

. TarUnpack: Tar xvf filename.tarPackage: Tar CVF filename.tar dirname(Note: tar is packed, not compressed !)---------------------------------------------. GZDecompress 1: gunzip filename.gzDecompress 2: gzip-D filename.gzCompression: gzip

Install 1. Go to the http://java.sun.com/j2se/1.4.2/download.html to download a Linux platform JDK, it is recommended to download RPM self-extract format (rpm in self-extracting file, j2sdk-1_4_2_06-linux-i586-rpm.bin );2. Upload the file to a