按名称查找进程 ID [英] Find a process ID by name

问题描述

如何在 Ruby 中按名称或完整命令行查找 pid，而不调用外部可执行文件?

How can I find a pid by name or full command line in Ruby, without calling an external executable?

我将 SIGUSR2 发送到命令行包含 ruby job.rb 的进程.我想在不调用 pgrep 的情况下执行以下操作:

I am sending SIGUSR2 to a process whose command line contained ruby job.rb. I would like to do the following without the call to pgrep:

uid = Process.uid
pid = `pgrep -f "ruby job.rb" -u #{uid}`.split("\n").first.to_i
Process.kill "USR2", pid

推荐答案

一个快速的谷歌搜索想出了 sys_proctable，它应该让您以可移植的方式执行此操作.

A quick google search came up with sys_proctable, which should let you do this in a portable way.

免责声明:我不使用 Ruby，无法确认这是否有效.

Disclaimer: I don't use Ruby, can't confirm if this works.

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