Module who 

Structs

UtmpxEntry

A decoded utmpx entry.

WhoConfig

Configuration for the who command, derived from CLI flags.

Functions

current_tty

Get the terminal device for the current process (for “who am i” / -m).

format_count

Format output for the -q / –count mode.

format_entry

Format a single utmpx entry as an output line.

format_heading

Format heading line.

format_time

Format a Unix timestamp as “YYYY-MM-DD HH:MM”.

read_utmpx

Read all utmpx entries from the system database.

read_utmpx_with_systemd_fallback

Read utmpx with systemd fallback, checking PIDs (for who/users).

read_utmpx_with_systemd_fallback_ex

Read utmpx entries, falling back to systemd sessions if the utmpx database has no USER_PROCESS entries. This matches GNU coreutils behavior: when /var/run/utmp is absent or empty, use systemd-logind session files.

read_utmpx_with_systemd_fallback_no_pid_check

Read utmpx with systemd fallback, without PID checking (for pinky).

run_who

Run the who command and return the formatted output.

should_show

Check if an entry should be displayed given the config.