Linux operating level 7: 0: direct system shutdown 1: Single User Mode 2: consistent with Level 3, but no NFS service 3: complete Plain text mode with network functions 4: System reserved function 5: similar to running level 3, but using XWindow6:
XCache is a fast and stable PHPopcoolcode cache. it has been well tested and runs stably on high-traffic/high-load production machines. tested (on linux) and supports the latest versions of all current PHP branches, such as
In a production or work environment, you may encounter the following situation: in a multi-person, multi-task environment, multiple people share a disk space, some people may put a lot of or a lot of files in the same space, resulting in a sharp
Common parameters: a displays all processes of all users (including other users), u displays processes by user name and start time, and x displays processes of uncontrolled terminals; e. display all processes, including uncontrolled processes; f.
The file transfer protocols under SecureCR include ASCII, Xmodem, Ymodem, and ZmodemASCII: this is the fastest transfer protocol, but only supports transferring text files. Xmodem: This old transmission protocol is slow, but the CRC error detection
I read some documents and summarized some basic Vim commands suitable for programmers. they are not very complete, but at least practical... All are the most basic vim tutorials. open the terminal under fedora. Input vimfilename to enter the vim //
Codeblocks is not successfully installed, and cannot be uninstalled. the software cannot be installed or uninstalled. the software package system is damaged. check whether the third source is used. Disable them if they are, because they are usually
At the operating system level, the virtual address space seen by each process is independent and there is no intersection between them. Therefore, you need to map different virtual addresses of multiple associated processes to the same physical
We often encounter decompression of large *. zip files under linux. generally, winrar is often used to extract files directly in smb, but there may be a long decompression time and sometimes network errors. Therefore, I checked the linux
In Ubuntu, switching between root users and user users is a popular Linux system recently, because Ubuntu does not start root users by default. now we will introduce how to enter the root user. (1) switch from the user to the root user, whether
If you often need to copy files from one server to another, you need to use the remote replication command scp, for example, from the logged-on server 1 (192.168.1.1) copy/usr/a to the/usr directory of server 2 (192.168.1.2). The command is as
In the previous articles, I introduced the android source code download method under UbuntuLinux, the Eclipse development environment for android under Ubuntu11.10, and some problems encountered during the configuration process, this article will
Vi is a screen editor provided by all UNIX systems. It provides a Windows device that allows you to edit files. Of course, people who know a little about UNIX systems think that vi is super difficult to use, but vi is the most basic editor. after
Note: Because the pdf functions of okular, epdfview, and evince are provided by the poppler branch of xpdf, these software is called by poppler here. I have not tested it in kpdf, because I am using okular directly now. Poppler official website:
A) essence: message linked list B) classification: 1. POSIX message queue: Port Operating System Interface 2. system V: as the kernel continues, it will be deleted only after kernel restart and manual deletion. Each message queue corresponds to a
Quoto: Disk quota: limits the usage of a user on a disk! Limited space size. limited file quantity soft limit, hard limit soft limit: gracetime, can exceed the disk quota within a certain period of time! Hard limit: you cannot exceed the disk quota!
In Linux, you can use lm_sensors to view the CPU temperature (of course, your hardware must support it first). to use this function, you must support kernel-related modules (such as I2C, next let's talk about the operation method: first check
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