[Gllug] counting subdirectories

[Tethys]

"stanley" writes:

>the best I have managed is
>
>alias dc="ls -1aF | grep "/" | wc -l"
>
>this work but also includes the parent and root directories in the count.

So just remove them:

	alias dircount="expr $(ls -1aF | grep / | wc -l) - 2"

Note that I've avoided using "dc" as the alias name, as that conflicts
with the very useful dc calculator. Note that in real life, I'd do this
as a shell function rather than an alias, so you can pass it parameters
more easily:

	dircount()
	{
		_count=$(ls -1aF "${1:-.}" | grep / | wc -l) 
		expr $_count - 2
		unset _count
	}

Then you can do:

	leto:~% dircount
	160
	leto:~% dircount /etc
	90
	leto:~% dircount /lib
	8

Tet

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