Thanks, I've got the song (I downloaded the album because I'd only got the Vinyl) but I can't make out some of the dialect words. My provisional attempt was

Jock the Can would sing ye an old song
And when he'd done he'd fee his hand
He would stand, just waiting for something
Like a drink or a cobber or two in his hand
Cos them that ignored old John
And gathered and tasted to hell
And some took him in for a bit of a meal
Sit doon by the fire John
For you're just an old man that's wandered and gone
Aye, you carry the can and you're wandered and gone

The bits I can't decipher are

he'd fee his hand

or a cobber or two in his hand

And gathered and tasted to hell