Linux process-related operations

1. View all processes in the system

ps -e
ps -ef
ps -A
ps -eF

 The content displayed by these commands is somewhat different, you can try it yourself.

2. View PID by process name

pgrep name
pgrep -l name
pgrep -o name
pgrep -n name

name is the name of the process you are looking for. This situation is suitable for automatically obtaining the PID and performing some operations.

3. View the detailed information of the process

cat /proc/pid/status

4. View the priority of the process

chrt -p pid

5. View the status of threads in the process

top Hp pid

 

5. Modify the priority of the process

chrt -p -r level pid