Linux

Zabbix Monitoring System provides two ways to monitor the Linux host, one is to enable the SNMP protocol on the host, the other is to install the Zabbix Agent service on the host, this article describes the Linux system Zabbix agent installation and

1, configure the Linux client mail sending function[[Email protected] script] Vim/etc/mail.rcAdd the following in the file:Set From=1665***[email protected]Set smtp=smtp.qq.comSet Smtp-auth-user=1665***[email protected]Set

First of all, we know that Linux is a multi-user operating system, then the problem is, suppose I have a file called File1, this file is User user1, User1 has a project group G1, he wants his project team colleagues can view modify this file, But

Often see the author of the Linux software in the introduction of the installation software, in front of the command with a backslash, do not understand the meaning of the data later to know that this is to cancel the call of the alias, using the

The so-called shared memory is the fastest available IPC form that allows multiple processes to access the same piece of memory space. is designed for inefficient operation of other communication mechanisms. It is often used in conjunction with

(a) brief descriptionNginx can not only do reverse proxy, but also can be used as a forward proxy to the Internet and other functions. Forward Proxy: If you think of the internet outside the LAN as a huge repository, then the client in the LAN to

Original address: http://blog.csdn.net/w12345_ww/article/details/52182264. Copyright belongs to the original authorThese two days in the project to involve the use of elasticsearch, on the internet to search for some of this information, found that

1./the proc directory Linux kernel provides a/The proc file system, which accesses kernel internal data structures at run time, and changes the kernel setting mechanism. The proc file system is a pseudo-file system that only exists in memory and

Booting Process in Linux RHEL 7 | Linux RHEL 7 Boot processIn this post, I'll guide you booting process in Linux RHEL 7, it's very important to know the Linux booting process to Troubleshoot and fix boot issues. Redhat 7 replaced the init process

Reference Source: http://www.cnblogs.com/xiaochaohuashengmi/archive/2011/10/08/2203153.htmlRPM Execution Installation packageBinary packages (binary) and source code packages (sources) are two types. Binary packages can be installed directly on the

Advanced Programming in the UNIX Environment (third edition) is a well-known programming book for Unix systems.However, the code example in the book, in order to correctly compile the run, you need to prepare the work:1. Download the source

Linux just installed, the default is Firefox browser and version is low, my system is CentOS, Firefox version number is 31, with Yum installed version is not the latest, as long as the official website to download the latest version of the

IntroductionPerform a task at some point in the future: at, BatchTo run a task periodically: crontabExecution result: will be sent to the user by mailCheck if the mailbox service is on: (25 port)~]# NETSTAT-TNLP~]# SS-TNLLocal Email

What the software can doRAID1. Double read speed, two disks read togetherRaid0. Write two hard drives, one piece to write halfRAID5:RAID1+RAID0 Three pieces of diskMdadm-c/dev/md0-a yes-l 1-n 2-x 1/dev/vdb{1..3}-C; Create-A: Add-L: Priority-N:

The echo command for Linux, which is very common in shell programming, is often used when printing variable value under a terminal, so it is necessary to understand the use of EchoThe function of the echo command is to display a piece of text on the

It can generally be made effective by ulimit commands or by editing the/etc/security/limits.conf reload methodThe Ulimit comparison is straightforward, but only valid in the current session, limits.conf can be used by users and restrictions to

First, the Linux common time correlation function-asctime,ctime,getttimeofday,gmtime,localtime,mktime,settimeofday,timeAsctime: Converting dates to stringsCTime: Converts a number of seconds into a stringGettimeofday: Gets the time and date based on

SHELL script strategy (Study Notes)-1.6 mathematical operations and bc commands, shell-1.6 Directory: 1.6.1 basic Integer Operation 1.6.2 bc command advanced arithmetic operation Use let, $ (), or $ [] to perform basic integer operations. Use bc for

Nginx layer-4 load balancing configuration, nginx layer-4 load balancing Configure the proxy Mysql Cluster Environment for nginx layer-4 Server Load balancer as follows: Step 1 Check whether the stream module is installed in Nginx. The installation

Linux rename command usage (suitable for modifying file names in large batches), linuxrename Rename command usage in Linux (suitable for modifying file names in large batches) When watching laruence's Private food, I ran into the mv command, which