Linux

1 Service side:SSH-KEYGEN-T RSASsh-copy-id-i/root/.ssh/id_rsa.pub 192.168.57.135[Email protected] sh]# more rsa.sh #!/bin/sh#by authors Chy 2016for i in $ (cat test.txt) do ssh-copy-id-i/root/.s Sh/id_rsa.pub $i echo $i "Set Password login

1. User's additions and deletions changeUseradd Xiaoguo Create a userPassed Xiaoguo Modify or add a passwordUserdel Xiaoguo Delete a userNL ShadowNL passwdRM-RF testuser Delete the directory where the user testuser is locatedUsermod-l Xiaoguo Lock

View and add path environment variables under Linux$PATH: determines which directories the shell will look for commands or programs, the value of PATH is a series of directories, and when you run a program, Linux searches for compiled links in these

Reference http://blog.csdn.net/solomon1558/article/details/519672801 installing cmake and dependent libraries$ sudo apt-get install cmake$ sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev Libavformat-dev libjpeg.de V Libtiff4.dev

IPV4 socket Address structurestructsockaddr_in{uint8_t sinlen; (4 bytes) sa_family_t sin_family; (4 bytes) in_port_t sin_port; (2 bytes)structin_addr sin_addr; (4 bytes)Charsin_zero[8];}; Sin_len: The length of the entire SOCKADDR_IN structure, some

# # # #不废话, go directly to the theme ####Because the domestic mainstream is still the Redhat series of operating systems, so only for such systems for the software package tool descriptionThe common software contractor of Redhat system hasYum: Try

1, in the Linux system, the editor markdown can use the Retext tool# debian/Ubuntusudoinstall retextretext Release-notes.md2. Convert the markdown file to an HTML file using Python-markdownMarkdown_py-o HTML4 release-notest.md > release-notes.html3.

Implements the application and device drivers to communicate through the IOCTL. Still have no feeling about the device driver, put the code.Tested in Ubuntu 16.04 64bitIoctldemo.c#include

1. Verify that the IP address, subnet mask, and gateway are correct.Ifconfig2. Verify that the LAN is interoperable, access other people's computers, gatewaysPing sends packet to receive packet, device is

1. Use the DF command to view the file system and associated mount point information[[Email protected] ~]# Dffilesystem 1K-blocks used Available use%mounted on/dev/mapper/vol0-root51224128 3019100 48205028 6% /Devtmpfs492436 0 492436 0%

Reference Link: http://www.liaoxuefeng.comInstallationInstallation steps:① first load the operating system with GIT tools, take Linux for example:$ sudo apt-get install git② to the GitHub website for an account to generate SSH key③ generates SSH key,

1.tree Command Function and installationThe tree command lists the file directory structure in trees and installs the command on-line yum install tree Enter[[email protected] ~]# yum install treeloaded plugins: fastestmirror,  securityloading mirror 

1.Linux Link ConceptThere are two types of Linux links, one called hard links, and the other called Symbolic links (symbolic link). By default, the LN command produces a hard link."Hard Connect"A hard connection is a connection that is made through

Linux System has 7 runlevel (runlevel)runlevel 0: System down state, system default RunLevel cannot be set to 0, otherwise it will not start normallyrunlevel 1: Single User working status, root privilege, for system maintenance, remote login

Mkdir-pRmDir Non-empty delete (delete empty directory)Rm-rfCp-r/bin/cpMV Moving filesCatTacMoreLess J K ctrl+b ctrl+f g g ....HeadTail-f (Dynamic)LL (ls-l) r=4 readable w=2 writable x=1 executableD rwxr-xr-x 2 root root 4096 November 29 05:59 1-RW---

Magic script commands in linuxMagic script commands in linux A script is a magic command. A script can record the session process of a terminal, and then use scriptreplay to play the recorded results to others. The advantage of a script is that you

Install the web development environment in linux and the linuxweb Development Environment The following uses the linux centos System I. JDK Installation 1ddownload jdk-8u111-linux-x64.tar.gz 2. decompress the file and copy the extracted file to

Linux (9) _ network test and linux Network Test 1. confirm that the IP address, subnet mask, and gateway are correct. Ifconfig 2. confirm that the LAN is interconnected and access others' computers and gateways Ping to send data packets to

Use shell scripts to ping the name of the corresponding IP address, shellping #! /Bin/basha = (Zhang San, Li Si, Wang Wu, Zhao Liu) for I in {0 .. 3} doif ping-c 1 192.168.1. $ ($ {I} + 1)> dev/null 2> & 1; then echo $ ($ {I} + 1 )) "No." $ {a [$

Linux httpd source code compilation and installation, and linuxhttpd source code compilation # Wget http://apache.fayea.com/httpd/httpd-2.2.31.tar.bz2download the source code package from the official network # Mv