Retrieves a list of all currently logged in users (sessions) from the /var/run/utmp log.
After running the linux-shell-sessions command, the output fields are as follows:
|src_ip||IPv4 address||Source IP address from which the user logged in|
|idle_time||Integer||Idle time in seconds|
|jcpu||Double||CPU time consumed by all processes connected to the terminal in seconds|
|pcpu||Double||CPU time used by the current process in seconds|
|cmd_line||String||Running command line|