Linux Command cut usage

--Sort by file size shows the first 100 rows showing the last five columnsLl-sh|head-n 100|cut-d '-F 5-First, the basic grammarCut is a selection command that, in the unit of behavior, divides the rows into fields with the specified delimiter and

Batch creation of Linux VMS with OS disk larger than 30G on Azure

The size of the OS disk for VMS on Azure is fixed at the time of creation. Windows is 127g,linux is 30G. If you need to bulk-create VMS, the OS disk has greater capacity. Consider the following method to implement.1 Create a Data-disk CentOS VM,

Common commands for Linux

1.PWD commandThe pwd command represents ' Print working directory ' (print working directory). When you type PWD, you are asked to display your current location on your Linux system. For example:[Email protected] apache]# pwd/tmp/apacheIndicates

Linux days often use instructions

Recently engaged in a Ali Ecs,centos7, involving some basic Linux instructions, here to summarize, in the context of some of the commonly used instructions, familiar with these instructions can basically use CentOS for daily operation.More can refer

How to install and use Linux under Rz/sz

The new cloud server with SECURECRT does not support the upload and download, did not find the RZ command. Record how to install the Rz/sz command.I. Description of the toolIn the SSH login software such as SECURECRT, upload/Download the file by

Linux Files and directories

Linux file propertiesChanging the properties and permissions of a fileCHGRP: Changes the group to which the file belongs.Chown: Change the owner of the user.chmod: Change the permissions of the file.Example: chmod 777. BashThe three numbers are:

Linux next to the beat template

Windows version Portal: with a half-day noilinux, is almost to understand, will probably use noilinux brush questions more.Data generators (as is the case with Windows)1#include 2 using

Linux under PS1 PS2 PS3 PS4 Prompt detailed

Many people in the use of Linux, the prompt is not too much attention, can use a good prompt can be more intuitive to see, for their own judgmentLinux has PS1 PS2 PS3 PS4 Four class prompt, these four variables are environment variables, as to what

Linux under Compression and packaging tools--gzip, bzip2 and tar;


The following is from: Amin, the commonly used to write, the feeling can be; Just compress and unzip the tool: Gzip Tool:Just remember these parameters when you use them: NOTE: gzip cannot compress the

DNS of Linux servers

What is the nature of DNS? Domain Name System = DNS (domain name systems) is actually a database, is a distributed database for TCP/IP programs, and is also an important network protocol. DNS stores information about IP addresses and corresponding

Linux uses a timer implementation to set any number of timers

This example overrides the Title:implementing software timers example of Don LibesWhy this feature is needed because most computer software clock systems usually have only one clock to trigger an interrupt. When running multiple tasks, we would like

Hasen Linux device Driver Development learning journey--clock

/** * Author:hasen * reference: "Linux device driver Development specific EXPLANATION" * Brief introduction: Android small Novice Linux * device Driver Development Learning Journey * Theme: Clock * date:2014-11-15 * *First, the kernel timer1

Linux Interview and maintenance problem

How do I change the of all. conf files under/home/example/to DB01 in non-interactive mode?  find/home/example/-type f-name "*.conf"-print|xargs sed-i ' s/192\.168\.0\.2/db01/g ' Write Iptables rule, only allow remote host

linux[Base]-02--info Page

In all Unix like systems, you can use man to query for instructions or usage, but in Linux it provides aOnline Help Method (info)The difference between and manMan: Output a whole bunch of content at onceInfo: Paragraphs to output, each

FTP Service for Linux

1.FTPis file Transfer Protocol (File Transfer Protocolenglish abbreviation, and Chinese Jane is called "the Interfax agreement". For use on the InternetControl Filestwo-way transmission. At the same time, it is also aApplication(application). There

Linux device-driven firmware loading

As a driver author, you may find that you face a device that must download the firmware into it before it can support work. The competition in many parts of the hardware market is so strong that even a bit of the cost of the EEPROM used as a device

linux--Compressed Files


linux--Compressed FilesWhy do I need to compress files?The file may take too much time to transfer due to the large file size during the transfer process. There are two obvious benefits to reducing file size, one is the ability to reduceLess storage

Linux definition variables, adding variable values

1. Setting the value$name =test2. Value of the output variable echo$echo $name3. Add Variable ContentPath= $PATH:/home/bin/testPath= "$PATH":/home/bin/testPath=${path}:/home/bin/test4. If the variable needs to be executed in other sub-processes, the

Linux Common Commands

System Information The processor architecture of the Arch Display Machine (1) UNAME-M display the processor architecture of the Machine (2) uname-r display the kernel version dmidecode-q display hardware system parts-(SMBIOS/DMI) hdparm-i/dev/ HDA

Disk Management for Linux

1. Introduction to Disk termsThe MBR master boot record (MBR, main boot record) is a section of boot (Loader) code located at the front of the disk. MPT HDD Validity indicator. 0 tracks a sector of 512 bytes is the former 446:MBR master boot record.

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