Interactive terminal file manager and disk usage analyzer. More information: https://github.com/jarun/nnn/wiki/Usage#program-options.
nnn
nnn -d
nnn -H
NNN_BMS environment variable):nnn -b {{bookmark_name}}
nnn -T {{a|d|e|r|s|t|v}}
<o>, and type a program to open the file in:nnn -o