Found online... I may have Gene Autry's version somewhere...
Was it also called cowboy blues?

Perry Como -

YOU DON'T KNOW WHAT LONESOME IS (TILL YOU GET TO HERDIN' COWS)
Words and Music by Foster Carling and Country Washburne

Do me ah ma doo, do me ah ma day!
All alone . . . All alone!

When the hoot owl toots his tooloo to the wail of the nip wick hen,
And the chink-funk chirps in the chilly night, it's mighty lonesome then;
And it's mighty lonesome when the wind howls thru the jack-pine boughs
But you don't know what lonesome is till you get to herdin' cows.

Do me ah ma doo, do me ah ma day!
All alone . . . All alone!

Oh, the ordinary fella gets off on a Saturday night
An' he gets a chance to see his pals, which ain't no more than right;
But when the saddle is your life, there's no time to carouse,
And you don't know what lonesome is till you get to herdin' cows.

Do me ah ma doo, do me ah ma day!
By myself . . . By myself!

Now, the keeper of the lighthouse, an' the sailor-man at sea,
An' the lookout on the mountain-top ain't got a thing on me;
'Cause I got all the lonesomeness that the common law allows.
Man, you don't know what lonesome is, till you get to herdin' cows.

Do me ah ma doo, do me ah ma day!
Cowboy blues . . . Cowboy blues!

Now, you may often wonder why a cowpoke sings so sad.
He's a-thinkin' of the many things in life he's never had:
No pal, no gal for company, jus' the cattle as they prowl.
Man, you don't know what lonesome is till you get to herdin' cows.

Do me ah ma doo, do me ah ma day!
All alone . . . By myself!
Cowboy blues . . . Doggone cow!
Doggone cow!
Doggone you, you licked me again!