Chapter II Linux Network Programming2.1 customer-Server modelAt present, most Web applications are written with a client-server model, assuming that one end is a customer and the other is a server, so that the server provides the customer with a
Linux files have three identities and four permissions, and three identities are:U: Owner of FileG: The group to which the file belongsO: Other usersFor each identity, there are four different permissions, namely:R: Permission to read files (read)W:
Linux Command Tools TopThe top command is a common performance analysis tool under Linux that shows the resource usage of individual processes in the system in real time, similar to the Task Manager for Windows. Top is a dynamic display process
XAMPP is a beginner to use the integrated Apache MySQL and PHP configuration installation package, we can use XAMPP to quickly install the configuration of the PHP environment, let's take a look.To hang our PHP Web program on a Linux server, we have
Regular expressionsShorthand for REGular EXPressionMetacharactersNumber of MatchesPosition anchoringGroup--------------------------------------Metacharacters. Match any single character[] matches any single character in the specified range[^]
Transferred from: http://151wqooo.blog.51cto.com/2610898/1162118If you want to find "hello,world!" in the current directory String, you can do this:Grep-rn "hello,world!" **: represents all files in the current directory, or it can be a file name-R
Baidu Library Linux command Daquan: http://wenku.baidu.com/view/fdbf5e3267ec102de2bd89ef.htmlcommon release versions of Linux redhat:advanced standard5; Enterprise Standard5; workstation Standard Fedora:fedoraTenUbuntu:ubuntu8.10Opensuse:opensuse11.0
Linux Operations Phase II (v) Rights ManagementI. Rights management (to address the problem of user and lack of identity)#dumpe2fs-H/dev/sda2 ( command to query the specified partition detail file system information,-H shows only the details in the
Linux Operations Phase II (vi) file System ManagementFirst, hard disk:Logical Structure: Sector sectors(minimum storage unit of disk), track, cylinder cylinders;hard disk Size: number of Heads * Number of cylinders * Number of sectors * size of each
It's the furthest distance in the world I can't breathe your move and take my heart with me every lonely nightPaint your smile with a paintbrush in my heart I don't doubt your presence is the miracle of my lifeFeel your breath every time I want to
1) Yum Install-y Lrzsz2) Software InstallationThe installation files are uploaded to the/tmp directory using the SFTP tool first.# cd/tmp# wget http://www.ohse.de/uwe/releases/lrzsz-0.12.20.tar.gz# tar ZXVF lrzsz-0.12.20.tar.gz && CD lrzsz-0.12.20#./
(File system construction, highly recommended direct use of buildroot, official online tutorial is very detailed BuildRoot official website)File systems typically contain many third-party software, such as Busybox,tslib,qt,vim, cross-compiling tools,
(iv) Operation of directories and files#mkdir/test//Create a Test directory (folder) under the root directory#mkdir-P/test/test//Recursive creation of directories (without the Test directory under the previous root), also known as the creation of
Linux Compiled installation GCC-5.1.0Linux C + + programs written under the natural lack of a good compiler , Linux under the more common nature is gcc. In late April 2015, GCC also had a 5.1.0 version, and there was better support for C++11/14.
Grepcommand grep to search for text based on keywordsgrep ' HHL '/etc/passwd-I ignores case-N Displays the number of rows in which the result-V Output lines without keywords-ax the specified number of rows after the row of the result is included in
Linux Application Development-multi-process programming One creation processThe difference between fork and vfork1 Fork creates a child process that has its own data segment and stack and vfork creates a child process that shares the data segment
Check whether the CentOS system is 32-bit or 64-bit
How can we see whether the CentOS system is 32-bit or 64-bit?
32-bit system:
[root@localhost ~]# file /sbin/init/sbin/init: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically
Linux disk management practicesProblem description
My partner from analytic1 failed to upload attachments to the Confluence Knowledge Management System of the lab. After investigation, I found that the disk space was insufficient and I useddfCommand
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