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How to get overall CPU usage (e.g. 57%) on Linux [closed]
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Take a look at cat /proc/stat
grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}'
EDIT please read comments before copy-paste this or using this for any serious work. This was not tested nor used, it's an idea for people who do not want to install a utility or...
Using multiple delimiters in awk
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Produces:
tc0001 tomcat7.1 demo.example.com
tc0001 tomcat7.2 quest.example.com
tc0001 tomcat7.5 www.example.com
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为维护国家安全 中国限制出口无人机和高性能计算机 - 资讯 - 清泛网 - 专注...
...大于等于30分钟小于1小时、能在大于等于46.3千米每小时(25节)阵风条件下起飞和稳定可供飞行的，最大续航时间大于等于1小时的，均在限制范围内。
中国“彩虹4号”中空长航时查打一体无人机
有分析称，从技术角度来看此...
20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
20个命令行工具监控 Linux 系统性能原文出处：Tecmint.Com-Ravi Saive译文出处：Linux story-FOREST对于每个系统管理员或网络管理员来说，每天要监控和调试 Linux 系统性...原文出处： Tecmint.Com-Ravi Saive 译文出处：Linux story-FOREST
对于每...
Is it possible to ping a server from Javascript?
...lements the above, please comment and I'll add it into the answer.
Update 2: @trante was nice enough to provide a jsFiddle.
http://jsfiddle.net/GSSCD/203/
Update 3: @Jonathon created a GitHub repo with the implementation.
https://github.com/jdfreder/pingjs
Update 4: It looks as if this impleme...
C++11 reverse range-based for-loop
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Actually Boost does have such adaptor: boost::adaptors::reverse.
#include <list>
#incl...
Find a pair of elements from an array whose sum equals a given number
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edited Sep 12 at 14:53
hjpotter92
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How to get the separate digits of an int number?
I have numbers like 1100, 1002, 1022 etc. I would like to have the individual digits, for example for the first number 1100 I want to have 1, 1, 0, 0.
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