LINUX: ALL About How/what/why Queries ?

# How to check if the user have sudo access.?
# How to check which specific CPU processor process is bind to in Linux.
# How much time the process has been running.
$ps -p <PID> -o etime
# What is PID actually associated with each process?
--> PID is a dir/folder name created in a RAM that has more details about the process.
--> We can find more details by going into the /proc filesystem and see the number which is process ID.

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