the ability to only have 1 copy of the line in the output.... prefer '-1' over '-u'

-u is already enabled -- it's not mentioned as this post was only in reference to the key specifications. I can see no reason not to have -1 as an alias.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In reply to Re^2: sort utility key specification by BrowserUk
in thread sort utility key specification by BrowserUk

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