如何使用bash获取进程的有效用户名和Schduling类-Linux

Question

I'm trying to write a bash script that takes a process ID as the user input and prints out information about that process such as the nice value, priority ...etc. I almost got all what I need with help from this site: http://linux.die.net/man/5/proc

However, I couldn't find from where I can get the effective user name and the scheduling class of the process.

Any help would be appreciated.

Answer 1

The negated scheduling priority can be found as the 18th field of /proc/[pid]/stat as detailed in your link.

cat /proc/207/stat | cut -d' ' -f18

As for the owner of the process, it's the owner of the /proc/[pid] directory, or of any file in it.

stat -c "%U" /proc/207/

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Edit : removed my scheduling priority calculation because I don't know the first thing about it and might misinterpret the documentation. I'll just leave where the negated one can be found.