Command forces the shell to execute the program and ignore any functions, builtins and aliases with the same name. More information: https://manned.org/command.
ls program literally, even if an ls alias exists:command {{ls}}
$PATH (/bin:/usr/bin:/sbin:/usr/sbin:/etc:/usr/etc) that guarantees to find all standard utilities:command -p {{command_name}}
command -v {{command_name}}