Linux

. 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 FileName .Tar.gz and. tgzDecompress:

Shell can represent different hexadecimal data without calling the 3rd-party command. The following methods are summarized here. The default value of a shell script is a 10-digit number, which can represent other numeric values unless the number

The CentOS 5.2 server should be maintained and optimized in a simple and efficient manner.1. disable unnecessary services# NtsysvOnly services to be started are listed below, and all services not listed are closed:CrondIrqbalance (enabled only when

Ibus is the best choice for Chinese Input Methods in linux operating systems, and is the sogou pinyin in linux.  1. Import the Public KeyYou can also disable import, but a warning will be given during installation.$ Gpg -- keyserver keyserver.ubuntu.

  Download the rar3.0 linux source code package under centos5.3. After installation, run the rar command to find the prompt rar:/lib/libc. so.6: version 'glibc _ 2.7 'not found (required by rar)   Open the compressed package is empty, so the

  Linux®Debugging and Performance Tuning: Tips and Techniques chapter 5   /Proc directory:   Process-Specific Subdirectories Each process subdirectory has the following entries:   Entry   Description   Auxv   ELF auxiliary vector   Cmdline   Command-

We often see the following format when talking about the man page of an object:Mmap (2)Shm_open (3)What does the following number mean? You can use the man command to know that the number is, sectionMost unix-like operating systems use the same

In Linux, there is a type of character device that shares a master device number (10), but this device number is different. We call this type of device as a hybrid device (miscdeivce ), view/proc/device, and you can see that the master device Number

I directly preupgrade from f15 and it was quite smooth. I encountered a small problem. 1. logon Failure: After the installation, restart and find that the black logon interface has changed, but the password is always Oh, No, Some Problem ..... My

Q1. why is the address space of a process divided into "kernel space" and "user space "?A: The virtual address space of Linux is 4 GB. The kernel divides the 4 GB space into two parts. The larger 1 GB Space (the virtual address 0xC0000000 to 0

Today, tomcat and jiava are installed with yum intall tomcat5, so where is tomcat installed? How to start tomcat? How can I deploy my own website in Linux? With the above three questions, we began to explore.First, go to the/usr/bin directory and

It is very easy to install Nginx + jdk + mysql + tomcat in Centos 5.5. You only need to install the environment package and nginx in yum, decompress and install jdk and tomcat, configure the profile file, server. xml, and nginx. conf files. The

By Jun. net Problem: Tomcat is installed with yum on centos 5.5 and started properly. However, the webpage accessing port 8080 is blank.     View the linux version [Root @ inside ~] # Lsb_release-LSB Version: core-3.1-amd64: core-3.1-ia32:

Q1. What is a critical section? What is competition? What is synchronization?A: 1) The critical section (critical regions) is the code segment for accessing and operating shared data. It is usually unsafe for Multiple kernel tasks to concurrently

Q1. What is the Linux directory tree structure? What is the difference between it and Windows's directory tree structure? Why does the Linux File System adopt a fixed directory format?A: A file is an abstract concept. It is A warehouse that stores

Before reading the code, I have been seriously thinking about this issue. Do I need to pay attention to more than 3000 lines of code under the drivers/usb/storage/directory? Is that how many files can make different USB flash drives work in Linux?

  Tail view the last few lines of the file The tail command displays 10 lines at the end of the file on the screen. If more than one file is specified, add a file name title before each folder. If the file name is not specified or the file name is

  Chmod changes the permissions of files or directories Format chmod parameter file name R-read w-write x-Execute O-ower owner g-group owner group o-others + Add a permission -Cancel a permission. = Grant the given permission and cancel all original

  1) Update the package 1.1) check the updatable package: yum check-update 1.2) update all packages: yum update 1.3) update the specified package: yum update package_name 1.4) Version upgrade: yum upgrade 2) package installation and Deletion 2

  It should have been quite easy to install, but the installation in Ubuntu does take some twists and turns. Because the official system of ICE supports windows, RHA, and SUSE. No support for ubunt. However, ICE should be supported and must be