Linux

Course connection: Basic command line BASH operations Shell 1. Shell is an intermediary between the user and the underlying operating system (usually the kernel). It is responsible for transmitting user commands and operations to the underlying

Using Dynamic Host Configuration Protocol (DHCP) can avoid some tedious configurations after network parameters change. The client can retrieve relevant information from the DHCP server and complete related network configurations, it can still work

The/proc directory on Linux is a file system called proc file system (Virtual File System). It stores kernel status information, including cpu, memory, and processes. The proc file system has many advantages: applications do not need to switch to

16. Copy, modify, and delete the replace mouse operation in vim command mode: starting with a character ^; ending with $ 17. Compare and operate on multiple files simultaneously in vim: open multiple files: vim-o (Fat Man, vertical arrangement)/

Linux Study Notes-Introduction to the Linux System   Abstract: It mainly records some useful knowledge that can help you understand and use Linux, such as some related concepts, just look at it if you are not interested, and know that there is such

NAMEColrmCommands are also common commands in shell. They are easy to remove or filter specified columns from a specified file. SYNOPSISColrm [startcol [endcol]DESCRIPTION The Colrm command can remove specified columns from a file and provide input

Linux Study Notes-start   Abstract: There are no shortcuts for reading, summarizing, practicing, coding, and coding.  Preface:   Very early on, I wanted to learn something about Linux, and I was interested in the origin of the hacker's attraction of

Course connection: Vi Text Editor Vi and vim Vi is a text editing tool on the command line interface. It provides text editing, text processing, code development, and other functions. Vim is the strong version of vi (Code highlighting) Run vim to

Course connection: Vi Text EditorVi and vim Vi is a text editing tool on the command line interface. It provides text editing, text processing, code development, and other functions. Vim is the strong version of vi (Code highlighting) Run vim to

Linux Study Notes-related to Linux Abstract: I have summarized the history of Linux from the Internet and have a rough understanding of the source of Linux. In this way, I will be able to provide some help for future study and expand my knowledge.I.

Differences between iptables-I and-First, add A rule to the chain. The A parameter is the last to write the rule to the existing chain rule. By default, the I parameter adds A rule to the beginning of the existing rule chain. You can also insert the

The mod_status module of apache provides some statistical information for apache runtime, Which is meaningful to apache administrators.   I. Load the mod_status module of apache In various systems, the method for loading the apache module is

Clock/hwclock: Display and set the hardware clock(Query and set the hardware clock (RTC). the two commands are the same. RTC = Real Time Clock, that is, the hardware Clock. Command parameters: -S, -- hctosys synchronize the hardware clock to the

I don't want to talk nonsense about ssh and port forwarding. The main reason is that the command format of ssh is not very understandable. Related Articles have also been searched on the Internet, which is uneven. In fact, I also understand how to

I. Check the number of CPUs, cores, and threads in Linux. (1) Check the number of physical CPUs Grep 'physical id'/proc/cpuinfo | sort-u | wc-l (2) Check the number of cores Grep 'core id'/proc/cpuinfo | sort-u | wc-l (3) view the number of threads (

Install flash plug-in for Firefox in Ubuntu 12.04 After Ubuntu12.04 is installed, I use the Firefox browser to watch videos. Result The browser prompts that a suitable plug-in is missing and the player cannot be played. In the Installation Wizard, I

1. Check which file system has the most space used in the current system. Where is the file system mounted? Display,/dev/mapper/VolGroup00-LogVol00 has used the most space, the file system is mounted under the root directory 2. demonstrate

In Linux, when SVN is used for updates and other operations, the user name and password are always prompted, which is inconvenient. Therefore, I searched the solution and summarized it as follows: Open the SVN configuration file: Vim/home//.

JDK is installed in Linux in two ways: rpm and tar. Ubuntu uses the dpkg installation program, so rpm installation is not applicable. Therefore, this article only describes how to install jdk using the tar package. jdk installed using the tar

What do I say when I talk about jump? The CPU has many commands, not all of which can be used at any time, such First, you must have a code segment of RING3, which is running. 1. Define the RING3 code segment [SECTION. ring3]ALIGN 32[BITS