is_windows - checks if we're running on windows
is_mac - checks if we're running on a mac
is_gentoo - checks if we're running on gentoo
is_slackware - checks if we're running on slackware
is_bsd - checks if we're running on the bsd family of operating systems

is_available - determines if a command is available on this system
is_running - determines if a given process is running
size_of - provides the memory usage of an object
call - runs the given system command and provides back the results

name_by_pid - gets the name for a process by the given pid
pid_by_name - gets the pid for a process by the given name
pid_by_port - gets the pid for a process listening to a given port
pid_by_open_file - gets the pid for the process with an open file
pids_by_user - provides processes owned by a user
cwd - provides the current working directory for a given process
user - provides the user a process is running under
start_time - provides the unix timestamp when the process started
tail - provides lines from the end of a file
bsd_jail_id - provides the BSD jail id a given process is running within
bsd_jail_path - provides the path of the given BSD jail

is_tarfile - checks if the given path is a tarball
expand_path - expands relative paths and ~ entries
files_with_suffix - provides files with the given suffix

get_process_name - provides our process' name
set_process_name - changes our process' name