1. on creation, the soft link has one more parameter-S
For example:
Soft link: ln-s a.txt a_soft.txt
Hard link: ln a.txt a_hard.txt
Found: Soft links are similar to shortcuts in windows, accessing source files; hard links are similar to copy.
Tar commandTar [-cxtzjvfppn] file and directoryParameters:-C: Create a parameter command for the compressed file );-X: Unlock the parameter command of a compressed file!-T: view the files in the tarfile!Note that C/X/T can only exist under the
I. Use the hostname command[Root @ test ~] # Hostname yournameIn this case, the host name is changed temporarily.2. modify the configuration file/etc/sysconfig/network and/etc/hosts of the Linux host.1. Modify the host name in/etc/sysconfig/network.#
Auto-completion
The installation of Yum bash-complete can enhance a lot of completion, package expansion Yum Installation Software name VLC Chinese subtitles
Start VLC first, pressCTRL + P,In the lower left cornerDisplay SettingsSelectAll,
Click
Fedora
Copy the liveos directory in ISO to the root directory of a fat or ext partition. ThenIsolinux/vmlinuz0AndIsolinux/initrd0.imgCopy to the previous liveos. Hard Disk installation from NTFS partition is not supported.
Restart your computer,
The embedded Linux system consists of the Linux kernel and the root file system. A complete embedded Linux system: bootloader + boot parameters + kernel + root filesystem the embedded Linux system uses the Linux kernel, which is basically the same
Read and Write files in shared memory mode
# Include # Include # Include String . H> # Include # Include # Include # Include # Include # Include # Include " Timediff. h " Int Main ( Int Argc, Char ** Argv ){ Const Uint32_t shm_size = 200
Ctags Usage Details [http://blog.chinaunix.net/u2/79914/showart_1966746.html]
1. Use tagsWhat is a tag? One location. It records information about where an identifier is defined, such as C or C ++.ProgramA function definition in. This type of
The et mode is called the edge trigger mode. As the name suggests, the et mode will not be triggered when the edge is not found.
Epollout event:The epollout event is triggered only once during connection, indicating that it can be written. To
Although Linux is a multi-user system like Windows NT/2000, there are many important differences between them. For many administrators who are used to windows, there are many new challenges to ensure the security and reliability of the Linux
Zthread library is an open-source cross-platform advanced object-oriented linear and sycnchronization library to run C ++ in POSIX and Win32 systemsProgram.
Home page of The zthread Library:Http://zthread.sourceforge.net
Far from the latest
To learn embedded Linux well, we must first solve two important problems:
1. What do you learn?
2. How to learn?
First, solve the first problem.
The system architecture of Embedded Linux includes two parts: Software and Hardware:
Let'
The following are my main topics in the lab kernel discussion class on Saturday. I will upload the original ppt I mentioned on the Baidu Library and csdn download channel.
I will add a supplement to the previous article and update it after each
Permissions are very important for a user account, because they can restrict the user's ability to read, create, delete, and modify files or directories! We will combine the management commands and file permissions of the file system to explain what
130 when the disk on the Database Backup Server is full, check that the trace file of Oracle accounts for about GB. However, engineers were asked to add a 2 tb sata hard drive.
System: RedHat
Use fdisk for partitioning.
1. df-H view the size
I. multiple choice questions:
1. Add a static route to get to network 196.199.3 through the eth2 interface. Use. route add-net 196.199.3.0 B. route add-net 196.199.3.0 netmask route 0.0.0 eth2 C. route add 196.199.3.0 netmask 255.0.0.0 eth2 D.
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