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I like it sorted...
2> /dev/null was also needless, since our pipes already select stdin, only.
compgen -c finds everything in your path.
Just realized how needless the 'ls' has been...
This version is also multilingual, since there is no need to grep for a special key word ("nothing"/"nichts"/"rien"/"nada"...). And it makes use of all the available horizontal space.
no loop, only one call of grep, scrollable ("less is more", more or less...)
The whatis command displays a short description for the command you list on the command line. It is useful to quickly learn what a command does
Get simple description on each file from /bin dir, in list form, usefull for newbies.