What processes can the long killer utility terminate…

The utility long killer (presumably referring to pkill) can terminate processes based on various criteria:

By process name: Terminate all processes with a given name.
```
# Terminate all processes named "nginx"
pkill nginx
```
By user UID: Terminate all processes belonging to a specific user.
```
# Terminate all processes of user "user1"
pkill -U user1
```

By group GUID: Terminate all processes belonging to a specific group.

# Terminate all processes of group "developers"
pkill -G developers

By signal: Send a specific signal to a process. By default, SIGTERM is sent.
```
# Send SIGKILL (9) signal to process named "my_app"
pkill -9 my_app
```
By process ID (PID): Although pkill is mainly used for terminating processes by other criteria, it can also be used with PID, although traditionally kill is used for this.
```
# Terminate process with PID 12345
pkill 12345
```
By regular expression pattern: Terminate processes whose names match a given regex.
```
# Terminate processes whose names start with "java"
pkill ^java
```
By terminal: Terminate all processes associated with a specific terminal.
```
# Terminate all processes on terminal ttyS0
pkill -t ttyS0
```

By launch time: Terminate processes launched more or less recently.

# Terminate processes launched more than 1 hour ago
pkill -o 1h
# Terminate processes launched less than 5 minutes ago
pkill -n 5m

It is important to note that pkill is a more flexible utility compared to killall, as it supports regular expressions.

What processes can the long killer utility terminate?