Linux commands one of the Learning Notes directory and file basic operations

Directory OperationsCD: Enter directoryBasic format: CD directory nameExample:1), in the current directory into the subdirectory A, enter "CD a"2), in the current directory into the root directory of the subdirectory TMP, enter "Cd/tmp"Cd.. :

Linux commands one of the Learning Notes directory and file basic operations

Directory OperationsCD: Enter directoryBasic format: CD directory nameExample:1), in the current directory into the subdirectory A, enter "CD a"2), in the current directory into the root directory of the subdirectory TMP, enter "Cd/tmp"Cd.. :

Linux non-blocking connect function

Development test Environment: virtual machine centos,windows Network debugging assistantNon-blocking mode has 3 uses1. Three-time handshake to do other processing at the same time. Connect takes a round trip time, from a few milliseconds of LAN to a

Linux Storage technologies and applications: Configuring iSCSI Services and application examples

Experiment: Configure the iSCSI service, (service 4.103, customer 4.254/4.100)Add a new hard disk firstFDISK-CU/DEV/SDB # Enter disk partition modeEnter the following information in the partition mode: partition-N #新建分区-P #创建主分区1 #第一个分区Enter+1G

Problems with Linux porting driver Insmod

Errors that may occur when Insmod: (question 5 is the actual problem you are experiencing, others are learning from his experience)1.warning:function declaration isnt a prototypeThis kind of error is also very common, mainly for some of the

Linux chmod operations on file permissions

Under various UNIX and Linux operating systems, each file (folder is also considered a file) is read, write, run set permissions.For example, when I use the ls-l command to list file tables, I get the following output:-rw-r--r--1 apple users 2254 200

Linux tar command parameters and usage details--linux Package backup command

Linux tar command parameters and usage details--linux Package backup command tarCommandGNU version of the Tar-tar file management program. The meanings are described belowtar [-cxtzjvfppn] files and directories .... Common parameters: -C: Establish

SSH for the Linux series

SSH is a shorthand for Secure Shell Protocol (Secure Shell protocol).Server port number:SSH has certificate authentication and password Authentication two waysThe SSH protocol provides two server functions in a preset state:1. One is a remote shell

Install GCC5.3.0 under Linux (pro-test active)

For Linux small white, only need to know how to install, as for why wait for the study of Linux again. Knowledge is not the disadvantage of the system Ah!First of all, the low-level version of GCC is preinstalled on Ubuntu, which can handle the

Linux Command Manual

Linux commands are not built-in commands and external commandsBuilt-in commands are part of the shell programThe external command is the software function of the system, and the execution process is controlled by shellDistinguish between built-in

Study of clock function in Linux

When there are coding in Linux and winows, there are some problems when porting code.1. Are you allowed to do this? About clock () timing functionsThe first is a simple test code that reads the data from a text file and assigns a value to the run

Linux hand-built lamp environment

When you see the "Manual Build" in the title, do you think that it's hard to get "auto-build"? Of course...... No, the "manual build" here refers to the step-by-step construction of Apache, MySQL, and PHP environments, relative to the integration

Free memory under Linux, swap swap cache

A summary of memory exhaustion:1) before the process receives an oom, the kernel refreshes the file system's cache to free up space.2) Move the Swap area page to disk.3) When memory becomes small, virtualization enables each process to make a simple

Security threats pervasive: viruses based on Linux systems (RPM)

Although there is not much virus spread in Linux, there are some. I from someSafetyThe website collects some information.   1. Virus Name:   Linux.Slapper.Worm   Category: Worms   Virus data: Infection system: Linux   Non-affected

SVN for Linux Installation

Installation InstructionsSystem Environment: CentOS-6.2Installation method: Yum Install (source installation is prone to version compatibility issues)Install software: The system automatically downloads SVN softwareLinux SVN server-side

Linux Learning Series 6---Print files and send mail

File printingIf you want to print a text file, it's best to pre-process it, including adjusting the margins, setting the row height, setting the caption, and so on, so that the printed file is more aesthetically pleasing and easier to read. Of

Query system Load Information Linux command detailed

The Linux uptime command is primarily used to obtain information such as host uptime and query Linux system load. The uptime command used to show only how long the system was running. Now, you can show how long the system has been running, the

Linux file packaging compression, decompression, Backup command use Method (reprint)

For those who have just come into contact with Linux, it will definitely give Linux a bunch of different filenames to stun. Don't say, just for example, we know that the most common compressed files under Windows are only two, one is zip, the other

Linux Learning to send email to a designated user

Send mailThe operation after entering the mail program is simple, but can not enter the Mail & Operation Prompt interface, here are a few practical examples:1. Send to [email protected]1 [[email protected] ~]# Mail [email protected]23 Subject:hi, a

Reception of network packets in the Linux kernel-Part I concepts and frameworks

Unlike sending network packets, network packets are asynchronous, because you are not sure who will send you a network packet suddenly, so this network packet logic actually contains two things: 1. Notification after the arrival of the packet2.

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