The pkill -9 -f "upload*.sh" command will terminate all of the identified processes. This command will send a SIGKILL signal (-9) to all processes whose full command line matches the pattern
"upload*.sh" (-f). This signal will force the processes to terminate immediately without giving them a chance to clean up or save their state.
The kill -9 "upload*.sh" command is invalid, as kill requires a process ID (PID), not a pattern.
The killall -9 "upload*.sh" command is incorrect, as killall requires an exact process name, not a pattern.
The skill -9 "upload*.sh" command is incorrect, as skill requires a username or a session ID (SID), not a pattern.