Linux

One,Zip compression tool (support compressed directory, compressed files and directories, the original files and directories are not deleted)Yum Install zip-y installation zipZip + Compressed file name + original file name compressed files-R +

When installing Oracle software, you need to set user limits at the operating system level, and post-inspection can use the following commands to facilitate

RAID disk arrayInexpensive redundant disk array raid–redundant Arrays of Inexpensive Disks– Consolidate multiple small/low-speed disks into one large disk with hardware/software technology– Value of the array: increased I/O efficiency,

You can use the PS command. It can display information about the current running process, including the PID of the process. Both Linux and UNIX support the PS command, which displays information about all running processes. The PS command can

Linux Displays the system process command PS, the most commonly used are ps-ef and PS aux. What is the difference between the two? There is not much difference between the two, to discuss this issue, to go back to the UNIX system in the style, the

Linux and Windows inter-pass files: Xshell Securecet premise To use these two software to upload and download files using commands Lrzsz Installing Yum install-y lrzsz SZ upload from Linux to Windows usage sz 1.txt RZ from

ctrl+z/bg/nohup/setsid/&In Linux, if you want the process to run in the background, in general, we'll add & after the command, in fact, this is putting the command into a job queue:./rsync.sh JobsHowever, if the process is executed above the

1.uptime commandOutput: 16:11:40 up, 4:21, 2 users, load average:0.00, 0.01, 0.002. View the/proc/uptime file calculation system start timeCat/proc/uptimeOutput: 5113396.94 575949.85The first number is the system has been running for 5,113,396,.94

1. Environment VariablesIn the literal sense, the environment can be understood as the environment of the entire Linux system, while the variables are either a variable amount or a command.Then, we can understand the environment variables for Linux,

One, single user modePurpose: The root password is forgotten and the password is reset with a single user, if grub is not encrypted1. Restart the virtual machine, and when the System boot menu appears, press the up and down arrows on the keyboard to

One, GNUGNU is the "GNU's not Unix" recursive abbreviation, Stallman announced that GNU should pronounce Guh-noo (slave) to avoid confusion with the word new (note: GNU in English is intended to be the African wildebeest, the same pronunciation as

C An transplant and test summaryAdding Flexcan driver Support on KernelA. on kernel menuconfig, add the following items:[*] Networking Support---> CAN Bus subsystem Support---> Raw CAN Protocol (raw access with Can-id filtering) broadcast Manager

How do I use Linux commands in Windows?There are many on the web saying that installing cygwinportable under the CMD window is a Linux command, but there are some flaws.In fact, there is a very simple and effective way for programmers to use Git

When the terminal input: Cd/ho Presses the TAB key, an error is displayed:Bash:cannot Create temp file for Here-document:no space left on deviceThis is because the disk is full and can be scaled up, or some of the disk's directories will be migrated

Linux-based FTP scripts:1#!/bin/SH2 3 4 CD5Echo"completely uninstall the original FTP"6sudo apt-GetRemove--purge vsftpd # (--purge option means complete removal of software and related files)7 8Echo"Installing the VSFTPD server"9sudo apt-GetInstall

The third pre-course exam question: 3. Please execute the command to take out the IP address of eth0 in Linux (please use cut, the ability can also be used awk,sed command answer respectively)Because there was a question about awk-f. You can specify

The implementation of HTB (layered token bucket) algorithm was studied during the flow control of TC,HTB in the project. Think that this kind of thought is also applicable in the scenario of a producer consumer with similar and consuming

Server: differences between hard RAID and soft RAIDWhat is RAID?　　RAID is short for the English Redundant Array of Independent Disks. It is translated into Chinese as an Independent disk Redundant Array or a disk Array for short. To put it simply,

Python built-in functions and python built-in functions # Mathematical functions # import math to the Mathematical Module # floor () Round-down result = math. floor (6.2) print (result) # ceil () rounded up result = math. ceil (5.5) print (result) #

Ubuntu16.04 configure VPN based on L2TP and ubuntu16.04l2tp The basic idea is to install this tool: network-manager-l2tp Ubuntu has stopped shipping L2TP over IPSec support for Ubuntu since Precise. A workaround for this exists using network-manager-