If there already is a command that does what I ask for, just tell me
what it is

Currently there are a lot of maze-like areas where you need to
examine directions to find the way. Like mists thinning in this
directions or mists looming heavily in that direction etc.

But I don't know of a command that would examine all the directions
at once (something similar to "scan all"). Such a command would be,
if implemented, a very useful and convenient addition.

What do you think about it?

if I type "ll" it will enter the following commands:

l n
l e
l s
l w

I do up and down manually if necessary, but normally it is possible to deal with these by process of elimination.

In my client the alias is done as follows:

/alias ll {look n;look e;look s;look w} {new}

The new is just that when I save the group "new" all commands with that appendage are saved and can be loaded as a group rather than reentered individually each time I run my client.

That's still damn six commands instead of one.
Assume you do it during the fight, and look for direction to retreat, or something.
It's also difficult to make client indicate every direction, so that when you get all
six messages you need to think some before you guess which direction is the
right one.