load average

Check if the system has SNMP services installed# Rpm-qa|grep SNMPNet-snmp-5.3.2.2-17.el5Net-snmp-perl-5.3.2.2-17.el5Net-snmp-devel-5.3.2.2-17.el5Net-snmp-libs-5.3.2.2-17.el5Net-snmp-utils-5.3.2.2-17.el5Net-snmp-libs-5.3.2.2-17.el5Net-snmp-devel-5.3.2

The top command is often used to monitor Linux system conditions, such as CPU, memory usage, the programmer basically knows this command, but it is strange to use it very few people, such as the top monitoring view of the memory value of the meaning

Objective: 1, learn Linux, with big data, cloud and other applications, open source software will occupy the market, these applications are based on Linux.2. Pass the RHCE certification examReason: 1, the person's self-discipline is very difficult,

PSSH commandThe Pssh command is a python-written tool that can execute commands on multiple servers while supporting the copying of files, which is excellent in the same kind of tool, similar to PDSH, which individuals consider to be relatively pdsh

The following is a detailed introduction to the use of the top command in Linux, the need for friends can come to the referenceView multi-core CPU commandsMpstat-p All and sar-p allDescription:sar-p all > Aaa.txt redirect output to file Aaa.txtThe

The top command is often used to monitor Linux system conditions, such as CPU, memory usage, the programmer basically knows this command, but it is strange to use it very few people, such as the top monitoring view of the memory value of the meaning

1) Check current zombie process information# Ps-ef | grep defunct | Grep-v grep | Wc-l175# Top | Head-2top-15:05:54 up $ days, 23:49, 4 users, load average:0.66, 0.45, 0.39tasks:829 Total, 1 running, 479 sleeping, 174 stopped, 175 zombie# Ps-ef |

Top commandMonitor the operating state of the system, and can be sorted by CPU, memory, execution time. The first line, 03:30:22 is the current time, up 39 min is how long the system runs, 1 user indicating that there are currently several users

View boot time/Restart history for Linux systems1. Who-b command[[email protected] opt]# Who-b---View last (last) system boot timeSystem Boot Dec 27 05:062. Who-r command[Email protected] opt]# Who-r---See the last (last) time the system started,

Linux is a multiuser system that, once connected to a network, can serve multiple logged-in users at the same time. System administrators can keep abreast of the users in the system and what they are doing. to view the actions of a userIf the system

View multi-core CPU commands mpstat-p all and sar-p all Description: Sar-p all > Aaa.txt redirect output to file Aaa.txt The top command is often used to monitor Linux system conditions, such as CPU, memory use, the programmer basically know the

Linux Learning-pssh command Pssh is a python script that can execute commands on multiple servers, while supporting the copying of files, is excellent in similar tools, similar to PDSH, individuals think relatively pdsh easier, use must be

This command has two major uses, one is to see if your machine has recently been restarted, or because of hardware, and so on, the other is to look at your CPU load. Uptime 10:19:04 up 257 days, 18:56, users, load average:2.10, 2.10,2.09 1.10:19:04//

Liunx view the commands for performance (top and glance) Top command for Linux The top command is a commonly used performance analysis tool under Linux to display the resource consumption status of each process in real time, similar to the Task

Example one: Drawing Special graphics #!/bin/bashMax_no=0Echo-n "Enter number between (5 to 9):"Read Max_noif! [$MAX _no-ge 5-a $MAX _no-le 9]; Thenecho "WTF ... I ask to enter number between 5 and 9, Try Again "Exit 1FiClearfor ((I=1; i=i;

Http://blog.chinaunix.net/uid-11121450-id-385713.html Apache MINA (Multipurpose Infrastructure for Network applications) is a relatively new project for the Apache organization, which provides a very convenient framework for developing

A detailed explanation of the Linux top command usageFirst, describe the meanings of some of the fields in top:Virt:virtual Memory usage Virtual RAM1. The process "required" virtual memory size, including the library, code, data, etc. used by the

1, print the system load every 3 seconds#!/bin/bashwhiletruedo uptime sleep3 Done2, save the monitoring results to a file, execute in the background, and then monitor the file changes with Tail-fSH while. sh &[112867#!/bin/bashwhiletruedo

Https://www.jb51.net/article/58799.htmIn the absence of nagios monitoring software, as long as the server can be on the Internet, you can send e-mail to remind the Administrator of the system load and CPU usage.One, install Linux under a mail client

One, freeDisplays the unused and used memory states of the current system, including physical memory, virtual swap file memory, shared memory segments, and buffers used by the system core, etc.1. Parameter description-B: Displays memory usage in