Linux

Mount, Mount USB stick, mount-t Vfat/dev/sdb1/media/disk Umount, uninstall, umount/home/rich/mnt DF to see the size of disk space, Df-h can convert size to m,g form Du, disk space is gone, showing disk usage for a particular directory

Delete directory, file rm (remove)Feature Description: Delete files or directories.Syntax: RM [-dfirv][--help][--version][file or directory ...]Additional Note: The Execute RM instruction can delete the file or directory, if you want to delete the

First, the server configures DHCP to shut down the firewallYum Install Dhcp-yCd/etc/dhcpCp/usr/share/doc/dhcp-4.2.5/dhcpd.conf.example dhcpd.confVim dhcpd.confSystemctl Restart DHCPDTestUnplug the network cableSystemctl Restart NetwarkIfconfigYum

/boot related file directory (kernel, boot program)/proc virtual file system (System process directory, temporarily stored in memory)/root Administrator Home Directory/usr System file directory, equivalent to C:\windows/usr/local equivalent to

The common compression formats are: zip，gz，bz2，Z，xzCompression algorithms vary in proportion to compressionGzip Usage: Compressed after the format is. gz, the source files are deleted after compression 如： gzip /tmp/file

the recommendation of the book does not introduce, lest others say I have the suspicion of advertising. You can directly on Baidu, books and videos are everywhere, Linux these aspects of knowledge are their own learning video and reading summary,

Basic Conceptual relationshipsIn the computer architecture, the main body of the hardware board is divided into North and South bridges, the bridge is mainly CPU memory graphics and other data transmission, and the bridge is mainly responsible for

Command format:commands [-options] [parameters]Ls-la/etc1. Individual commands do not follow this format2, when there are multiple options, you can write together, most of the order can be arbitrary3. Simplified options and complete options-A equals-

Document Time: 2018-08-15Cross compiler: arm-linux-gcc-4.3.2Ubuntu version: 16.04Kernel version: linux-3.9.91, analysis Uboot How to start the kernelThe previous analysis of the environment variables shows that Uboot is starting the kernel through

1. What is a process??? The program that is running in the system.2. How to view the process of graphics?? Gnome-system-monitor3. View the process commands?? Whatis?ps3.1ps?? View process3.2ps?a?? View the processes associated with the current

Linux shutdown and restart systems are generally implemented using the same commands.In Linux systems, the shutdown/Restart commands are commonly used in shutdown, halt, reboot, and INIT, but the internal working process of each command is different.

Linux Command Summary Start-up terminal: ctr+alt+t, needless to say Terminal font enlargement: ctr+shift+ ' + ', terminal font reduction: ctr+ '-', needless to say LS: View the file information in the current directory PWD: View

**linux system add Operation Record Audit1.mkdir-p/usr/local/domob/records/chmod 777/usr/local/domob/records/chmod +t/usr/local/domob/records/2.vi/etc/profile Add the following code at the endif

ln LINK/BIN/LN-S Create soft linksln-s [Original file] [link file]Soft linksLn-s/etc/issue/tmp/issue.softHard LinksLn/etc/issue/tmp/issue.hardLs-l/tmp/issue.softlrwxrwxrwx. 1 root root 10 August 05:27 Issue.soft-/etc/issueL means this file is a soft

Basic Configuration DescriptionHost system: WINDOW10Virtual machine: WMware 12Linux version Image: centos-7-x86_64-dvd-1511External connection mode: Bridging modeBridge mode, in Baidu know inside is this explanation, I think very good copy come

DNS domain name resolution is to match the corresponding domain name to the IP address.1.HOST Local DNS resolution # Modify the local Hosts file configuration /etc/hosts # add rule 223.231. 234.33 www.baidu.com2. Network adapter profile DNS

Control Panel \ All Control Panel items \ Network Connections1. Select VMware Virtual Ethernet Adapter for VMNET8 Network2. Select the Sharing tab------VMware Bridge Protocol3. Tick allow other network users to connect through this computer's

First, install Tomcat1. Upload the Tomcat installation package to Linux;2. Unzip 2 Tomcat and modify the name separately:1), decompression command: Unzip　　2), modify the user name: MV　　　　3, modify the port number of two Tomcat, modify the file:　　The

The concept of exception in the microcontroller has also been exposed, it means that the CPU can pause the current thing, jump to the exception handler to execute. Previously written MCU bare metal program belongs to the front and rear program, the

There is a overcomit configuration in Linux, which is related to the performance of the system (heuristic allow, no check, or block) when the process is requesting memory resources too much./proc/sys/vm/overcommit_memory This file contains the