Linux

ll is not the next basic Linux command, it's actually an alias for Ls-l. Ubuntu default does not support the command ll, must use Ls-l, this is not very convenient to use. If you want to use this command, you can make the following

Objective: To monitor file changes within the specified directory of the Linux file system and record or submit them to the appropriate interface. The specified directory is used to store files submitted by the customer. The submission may be FTP or

First step: Download jdk, URL: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Because I am a 64-bit system, so I downloaded the jdk-8u91-linux-x64.gz Step Two: I put the JDK compression pack in

http://blog.csdn.net/fenghaibo00/article/details/9007263 For development at the application level (relative to kernel development), if you just want to quickly find code performance bottlenecks that are not interested in how Oprofile works, just

Using OpenSSL to generate certificates 1, the method of generating RSA key OpenSSL genrsa-des3-out Privkey.pem 2048 This command will generate a 2048-bit key, with a Des3 method encrypted password, if you do not want to enter the password each

Also the debt of the junior Linux class. 　　　　　　1.LL command to display details of non-hidden files under current file query results are divided into 7 columns: 1 if the '-rw-r--r--' represents the different rights of three users to the file: R:

Ubuntu without LL commands is unpleasant, simply add ais actually using LL equivalent to Ls-l Many Linux users use the bash shell, the most common user is the command complement (press TAB) and Alias (alias) features. Ubuntu defaults to create a

Clean up free cache by modifying the drop_caches of the proc system$echo 3 >/proc/sys/vm/drop_caches Drop_caches's detailed documentation is as follows:Writing to this'll cause the kernel to drop clean caches, dentries and inodes from memory,

dnscache.py detailed code as follows, under Linux, direct "import dnscache" without modifying anything else, you can have the DNS cache effect such as Windows, if necessary, in a valid time, empty the cache #-*-Encoding:utf-8-*-Import socket,

The Linux kernel accepts boot time parameters as it starts to boot system. This is used to inform kernel about various hardware parameter. Need boot time Parameters: * Troubleshoot system* Hardware Parameters The kernel would not able to determine

Tip: Install VSFTPD must be installed under root user to install successfully, go to root:Su-(there are spaces in the middle)Problem:1. Re-use command Getsebool-a | grep ftpd command to view issues when viewing status:SELinux is disabled (stating

Network managementEnvironment: UBUNTU-16.04.4-SERVER-AMD64/etc/network/interfaces NIC configuration informationAuto Lo #auto means that the Lo interface is loaded automatically when the system starts (boot up)Iface lo inet loopback #接口 lo as

Linux Private Services: Operating mode, user and group management, network management, SSH services.Operating modeLinux bootTraditional Linux booting is handled by the INIT process. For example, CentOS starts with Init.Upstart, Epoch, Muda and

The use of KVM under Linux CPU Open VT Installing the KVM Suite Add BR0 Bridging Network port Create a virtual machine disk, or create the disk when you install the virtual machine. Installing virtual machines Using virtual machines

All documentsIn Linux everything is a file, from the application layer (application layer) look at the underlying mechanism, all in a file view of these mechanisms. However, different underlying mechanisms, after all, are different, such as the

1. Define the areaImplemented in the master configuration file or in the secondary configuration file.This configuration is done on the secondary file, and is generally not added on the master profile. It is important to note that each zone ends

Experimental environment A minimal installation of the CentOS 7.3 virtual machine Installing NginxInstalling Nginx Dependency Packagesyum install -y pcre-devel zlib-devel openssl-devel wget gcc tree vim Nginx relies on Pcre,

Scheduled TasksEnvironment: UBUNTU-16.04.4-SERVER-AMD64crontab [-u user] Filecrontab [-u user] [-i] {-e |-l |-r}(default operation is replace, per 1003.2)-E (Edit user ' s crontab)-L (list user ' s crontab)-R (Delete user ' s crontab)-I (Prompt

One. Tar commandParameters Parameters Detailed Parameters Detailed -C You can use an absolute path to compress -X Unlock parameter directives for a compressed file -T

When I use the Centos7-mini,centos system itself is installed by default python2.x, version x according to different versions of the system, you can see Python--v or Python--version The system comes with the Python versionThere are some system