如何通过在Mac OS X中给出流程名称来获得流程的PID ?

I am writing a script to monitor the CPU and MEM of any given process. For that i need to send in the name of the process to be monitored as a commandline argument. For example.

我正在编写一个脚本来监视任何给定进程的CPU和MEM。为此，我需要发送进程的名称作为命令行参数进行监视。为例。

./monitorscript <pname>

I need to get the pid of the process in the script so that i can use a ps -p <pid> inside.

我需要在脚本中得到进程的pid，这样我就可以在里面使用ps -p 。

How do i get the pid of a process given its process name?

给定进程名称，如何获得进程的pid ?

I understand that there might be multiple processes in the same name. I just want to get the first process out of that list.

我理解在同一个名称中可能有多个进程。我只是想从这个列表中得到第一个过程。

8 个解决方案

#1

The answer above was mostly correct, just needed some tweaking for the different parameters in Mac OSX.

上面的答案基本上是正确的，只是需要对Mac OSX中的不同参数进行一些调整。

ps -A | grep -m1 firefox | awk '{print $1}'

#2

You can install pidof with Homebrew:

你可以用自制程序安装pidof:

brew install pidof
pidof <process_name>

#3

You can use the pgrep command like in the following example

您可以在下面的示例中使用pgrep命令。

$ pgrep Keychain\ Access
44186

#4

This is the shortest command I could find that does the job:

这是我能找到的最短的命令:

ps -ax | awk '/[t]he_app_name/{print $1}'

Putting brackets around the first letter stops awk from finding the awk process itself.

在第一个字母周围放上括号，可以阻止awk找到awk进程本身。

#5

Try this one:

试试这个:

echo "$(ps -ceo pid=,comm= | awk '/firefox/ { print $1; exit }')"

The ps command produces output like this, with the PID in the first column and the executable name (only) in the second column:

ps命令产生这样的输出，第一个列中的PID和第二个列中的可执行名称(仅):

bookworm% ps -ceo pid=,comm=
    1 launchd
   10 kextd
   11 UserEventAgent
   12 mDNSResponder
   13 opendirectoryd
   14 notifyd
   15 configd

...which awk processes, printing the first column (pid) and exiting after the first match.

…其中awk进程，打印第一列(pid)并在第一次匹配后退出。

#6

This solution matches the process name more strictly:

此解决方案更严格地匹配流程名称:

ps -Ac -o pid,comm | awk '/^ *[0-9]+ Dropbox$/ {print $1}'

This solution has the following advantages:

该解决方案具有以下优点:

it ignores command line arguments like tail -f ~/Dropbox
它忽略了像tail -f ~/Dropbox这样的命令行参数。
it ignores processes inside a directory like ~/Dropbox/foo.sh
它忽略了一个目录中的进程，比如~/Dropbox/foo.sh。
it ignores processes with names like ~/DropboxUID.sh
它忽略诸如~/DropboxUID.sh这样的名称。

#7

You can try this

你可以试试这个

pid=$(ps -o pid=,comm= | grep -m1 $procname | cut -d' ' -f1)

#8

-2

Why don't you run TOP and use the options to sort by other metrics, other than PID? Like, highest used PID from the CPU/MEM?

为什么不运行TOP并使用其他指标来排序，而不是PID呢?比如CPU/MEM中使用的最高PID ?

top -o cpu <---sorts all processes by CPU Usage

top -o cpu <---根据cpu的使用对所有进程进行排序。

#1