Linux

I. Linux terminal introduction shell prompt Bash Shell basic SyntaxTTY view currently logged in information1.1 Communication between different terminals[[email protected] ~]# TTY/dev/pts/1[Email protected] ~]# echo "Hellow" >/DEV/PTS/11.2 Broadcast

As we all know, memory management is the most basic and important part of the Linux kernel. Understanding the relevant principles, whether it is the understanding of memory, or for everyone to write user-state code is very helpful. Many books, many

Timed task editing specification process:Important points of knowledge:Remember to write timed scripts and scheduled tasks with full pathsWhat does it mean that most of the crontab planning tasks will be >/dev/null 2>&1 in the end of the year?> is

You need to compile the environment and library file support before installing Nginx:GCC, Zlib-devel, openssl-devel1. Install the command:Yum-y install make zlib zlib-devel gcc-c++ libtool OpenSSL openssl-devel2. Download Pcre, let Nginx support

PS Command: View current system process statusPs-a Show All current processesPs-ax shows no control of the terminal processPs-u better viewing the user better processPS Aux|less filtering processes via CPU and memoryPS aux--sort-pcpu in ascending

Here is the installation via VMware, the system is Centos-7New Virtual machineAlways next, choose Install laterSelect Linux, Version is Centos7Always NextBridging: Indicates that this machine is equivalent to a physical machineNAT: This machine can

One, the Linux operating system is composed of four parts:(They depend on the next layer, adjacent layers communicate with each other)(1) Application:The application interacts directly with the user, and it also contains a variety of different

Yum is used to help administrators install the software, which has a certain advantage over RPM, because in Linux, there is a dependency between the software, yum can install the dependent files required by the target package, and the RPM needs to

Character Match:.  # matches any single character  []  # matches any single character in the specified range [^] # matches any single character outside the specified range, and so on. /*/.* # does not need to be quoted on a string; for

Standard input standard output standard error redirect: #标准输出重定向 (will overwrite the contents of 1.text); example: ls >/DATA/1. Text (redirects the ls command output to 1.text) >> # Standard output redirection (append, not overwrite) 2> # standard

-----Linux Getting Started knowledge(1) Linux release version, kernel version; difference and contactLinux kernel is the core of computer operating system, is a hardware abstraction layer, disk and file system control, multi-tasking and other

all files in Linux:file type : theGeneral Documents -catalog file DLink File lBlock device bcharacter Device cSoket spipe file pdirectory structure in Linux :/bin Storage System can execute files a bit like that Windows directory in Windows/sbin

Memory organizes memory in pagination, and each page has a relationship to the computer architecture, and each page in Linux has a correspondingstruct page{}correspond to it. contiguous memory >The a:void *kmalloc (int count,int flags) function is

Pycharm connecting to Linux remote developmentInstalling python3.6 (UBUNTU16) on the LiunxsudoApt-getInstallsoftware-properties-CommonsudoAdd-apt-repository ppa:jonathonf/python-3.6sudoapt-Get updatesudoApt-getInstallPython3.6# Create a linked

Python3 Linux Installation (Redhat): Download python-3.6.4.tgz: https://www.python.org/downloads/release/python-364/ Yum Install dependent packages (varies per machine) Yum install openssl-devel bzip2-devel expat-devel

Difference:1. Free: Linux Open Source | Windows does not open source2. Cost: Linux most free (Centos) | Windows is not free, expensive3, use: Linux More for Servers | Windows more for PCs4, the original design: Linux recommended command line

Install telnet and cetos7telnet on cetos7 Run the command first Rpm-qa | grep telnet-server rpm-qa | grep xinetd If the returned blank Is Not Installed Yum install xinetd telnet-server Remember to open port 23 The telnet service is protected

Linux distributions standard shell: BASH software usage instructions, distributionsbash BASH is one of the most important tools and software in the GNU program. It is also the standard shell for Linux distributions. Bash has the following functions:

Linux introduction, With the development of Internet in recent years, Linux has gradually become one of the mainstream operating systems of servers. Many Internet giants use it as the operating system of key servers. Linux is better than windows in

Simple DHCP setup step tutorial, dhcp setup tutorial I. Install dhcp Root @ bogon ~] # Yum-y install dhcp The main configuration file of dhcpd is in/etc/dhcp/dhcpd. conf, but this file does not have any valid configuration by default. Manual