Linux

You actually can does this netcat with, I believe it's already installed in the most cases on Linux, and it's dead Simp Le.On PC 1, type: nc -l 55555On PC 2, type: nc $IP 55555, where $IP equals the local IP address of PC 1 [e.x. 192.168.2.50]Once

Reprint: http://www.cnblogs.com/aLittleBitCool/archive/2011/10/18/2216646.htmlAsynchronous Io, a very interesting thing, from the interface, the package is more powerful, there is time to study the internal implementation, you can consider

In the interrupt mechanism in the kernel, in order to prevent the problem of resolving interrupt nesting (preventing one interrupt from interrupting another interrupt), introduce the small task mechanism:Using a small task mechanism requires three

Answer:When applying permissions to directories on Linux, the permission bits has different meanings than on regular files. The write bit allows the affected user to create, rename, or delete files within the directory, and modify the

Linux is a very automatic file generation system, log, mail, backup and so on. But for some long-time logs, you can set up scheduled task deletions. sentence notation:find corresponding directory-mtime + days-name "file name"-exec rm-rf {} \;Example

Ubuntu system1. Modify IP address: sudo gedit/etc/network/interfacessudo vim/etc/network/interfacesAdd the following content:Auto eth0                                                //Set auto-start eth0 interface iface eth0 inet static              

Java programmers need to learn some Linux knowledgeJava programmers want to learn some Linux knowledge, here is the command you want to learn: large-scale Java EE applications are built in the Linux environment. In the development environment, we

In many classic operating system textbooks, the process is always defined as an execution instance of a program, it does nothing, it only maintains the various resources required by the application, while the thread is the real execution entity.The

Use a one-time password to securely log on to Linux through SSH Some people say that security is not a product, but a process (LCTT Note: security company McAfee believes that security risk management is a methodology, rather than a stack of

Use Git after the default SSH port is changed For security or other reasons, we may modify the default SSH service port number. By default, the existing git project reports an error during pull or push. Now, if the remote settings of the original

Centos7 switch root user set no password In centos7, whenever we use a common user to switch to the root user, a password is prompted. However, in some cases (such as personal computers), it may be a little troublesome. Therefore, it is necessary to

Sequence of CentOS boot scriptIfServiceToolAfter the restart, You need to manually start a lot of services, work and future maintenance is relatively cumbersome, and I have summarized the followingLinuxLowerStartAuto StartScriptInvolvedKnowledgeAnd

CentOS7 Automatic startup commandOld task commandsThe new command enables a service to automatically start chkconfig -- level 3 httpd on systemctl enable httpd. service causes a service to not automatically start chkconfig -- level 3 httpd

Centos password cracking and running level Today's key words: centos cracking password running level OK. Let's talk about today's content.1. Don't teach you anything. Teach you to read the system version first (I vaguely remember how to help the

Common CentOS text display commands Keywords: 1. common text viewing commands ------- 2. File Types and basic Permissions 1. common text viewing commands The following shows the commands one by one, and then introduces cat ---- more ----- less -----

Difference between su and sudo commands in CentOSI. Use the su command to temporarily switch user identities 1. Conditions and power of su The su command is a tool for switching users. How can this problem be solved? For example, if we log on as a

Adjust the terminal resolution after minimal Centos Installation Problem description: to minimize the installation of CentOS, there is no graphical interface by default. However, the command line interface is very small (800*600 by default), and

Basic commands for CentOS Common basic commands: Type COMMAND: displays the type of the specified COMMAND. Whatis COMMAND: View COMMAND summary and Chapter Information Info COMMAND: online document Hwclock-w: synchronize system time to hardware time

CentOS Permission System Restoration Method Sometimes the chmod-R is 777/, and the system is paralyzed ~ What should we do ?? Let's take a look. First, you must prepare the same system as the faulty machine. For example, you can install a linux

Use rtop to monitor remote servers Rtop is an SSH-based remote system monitoring tool. PassRtopYou can remotely monitor CPU, memory, disk, and network usage. RtopYou can use the Go language to obtain and compile the source code as follows: Git