12.7k stars!这个命令行性能监测项目，太酷炫啦!

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sampler

页面炫酷的性能监控

sampler是GitHub十分热门的一个性能监控项目。凭借着启动操作简单快捷，性能卓越，画面酷炫的特点斩获了12.7k stars。

相比其他的性能监控软件，sampler体量很小，只需要几行代码，便可完成下载安装到启动，全程都在shell命令行里操作，小白都能学会。

效果

sampler的界面十分酷炫，这里给大家展示一下细节：

当然，sampler不仅可以展示以上信息，你仍可以通过配置文件等，定制自己想要监测的信息数据。

安装

sampler的安装很简单，且支持各个平台系统，项目主页提供了每个系统的安装教程，在这里以mac系统为例：

1，命令行安装sampler

brew install sampler

2，一步到位，sampler已经安装好了，现在要启动他，首先创建一个配置文件：config.yml

文件内容如下（示例）：

runcharts:
  - title: Search engine response time
    position: [[0, 0], [45, 19]]
    rate-ms: 500
    triggers:
      - title: Latency threshold exceeded
        condition: echo "$prev < 0.8 && $cur > 0.8" |bc -l
        actions:
            terminal-bell: true
            sound: true
            visual: true
            script: 'say alert: ${label} latency exceeded ${cur} second'
    legend:
        enabled: true
        details: false
    scale: 2
    items:
      - label: GOOGLE
        color: 178
        sample: curl -o /dev/null -s -w '%{time_total}'  https://www.google.com
      - label: YAHOO
        sample: curl -o /dev/null -s -w '%{time_total}'  https://search.yahoo.com
      - label: BING
        sample: curl -o /dev/null -s -w '%{time_total}'  https://www.bing.com
barcharts:
  - title: Local network activity
    position: [[45, 20], [35, 8]]
    rate-ms: 500
    scale: 0
    items:
      - label: UDP bytes in
        sample: nettop -J bytes_in -l 1 -m udp | awk '{sum += $4} END {print sum}'
      - label: UDP bytes out
        sample: nettop -J bytes_out -l 1 -m udp | awk '{sum += $4} END {print sum}'
      - label: TCP bytes in
        sample: nettop -J bytes_in -l 1 -m tcp | awk '{sum += $4} END {print sum}'
      - label: TCP bytes out
        sample: nettop -J bytes_out -l 1 -m tcp | awk '{sum += $4} END {print sum}'
gauges:
  - title: YEAR PROGRESS
    position: [[45, 0], [35, 2]]
    cur:
        sample: date +%j
    max:
        sample: echo 365
    min:
        sample: echo 0
  - title: DAY PROGRESS
    position: [[45, 3], [35, 2]]
    cur:
        sample: date +%H
    max:
        sample: echo 24
    min:
        sample: echo 0
  - title: HOUR PROGRESS
    position: [[45, 6], [35, 2]]
    cur:
        sample: date +%M
    max:
        sample: echo 60
    min:
        sample: echo 0
  - title: MINUTE PROGRESS
    position: [[45, 9], [35, 2]]
    triggers:
      - title: CLOCK BELL EVERY MINUTE
        condition: '[ $label == "cur" ] && [ $cur -eq 0 ] && echo 1 || echo 0'
        actions:
            sound: true
            script: say -v samantha `date +%I:%M%p`
    cur:
        sample: date +%S
    max:
        sample: echo 60
    min:
        sample: echo 0
sparklines:
  - title: CPU usage
    position: [[0, 20], [22, 8]]
    rate-ms: 200
    scale: 0
    sample: ps -A -o %cpu | awk '{s+=$1} END {print s}'
  - title: Free memory pages
    position: [[22, 20], [23, 8]]
    rate-ms: 200
    scale: 0
    sample: memory_pressure | grep 'Pages free' | awk '{print $3}'
textboxes:
  - title: Docker containers stats
    position: [[0, 29], [45, 10]]
    rate-ms: 500
    sample: docker stats --no-stream --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}\t{{.PIDs}}"
  - title: Local weather
    position: [[69, 31], [13, 7]]
    rate-ms: 10000
    sample: curl wttr.in?0ATQF
    border: false
  - title: New York weather
    position: [[45, 31], [13, 7]]
    rate-ms: 10000
    sample: curl wttr.in/newyork?0ATQF
    transform: echo 1
    border: false
  - title: San Francisco weather
    position: [[56, 31], [13, 7]]
    rate-ms: 10000
    sample: curl wttr.in/sanfrancisco?0ATQF
    border: false
asciiboxes:
  - title: UTC time
    position: [[45, 12], [35, 7]]
    rate-ms: 500
    sample: env TZ=UTC date +%r
    border: false
    font: 3d

3，进入到配置文件所在目录，输入：

sampler -c config.yml

即启动成功啦！

sampler的可玩性很高，甚至可以装在服务器上监测服务器性能，更多好玩的点子由大家来发掘哟！

这里呈上项目地址：

https://github.com/sqshq/sampler.git

写在最后

这就是本期老周的项目推荐内容了，如果还想看更多更好玩的GitHub好项目，记得关注老周～感谢支持！