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I'm learning the look utility and I don't understand the meaning of the -t option.

Can someone show me some examples of it?

I read the man page, but still don't know what it exactly means.

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migrated from stackoverflow.com Oct 7 '11 at 17:15

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If you'd actually look at the man page, you'd see that the option -t is to ignore the case when matching. –  Tinctorius Oct 7 '11 at 13:39
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Actually -f is ignore case; -t specifies a termination character –  Paul R Oct 7 '11 at 13:56
    
@Paul I did read the man page. But still didn't get what it actually means. That's why I ask for examples. –  mitnk Oct 7 '11 at 14:04
    
@mitnk: not really a programming question - it will probably be moved to superuser.com shortly - but the man page is pretty clear - what part don't you understand ? –  Paul R Oct 7 '11 at 14:33
    
@Paul Thank you for your comments. I just found what it means. The part I don't understand is English sentence I guess ;) Sorry for my bad English. –  mitnk Oct 7 '11 at 14:44

1 Answer 1

up vote 1 down vote accepted

I don't know why that option would be useful. However here's an example:

$ look -df uncle /usr/share/lib/dict/words
uncle
$ look -df -tc uncle /usr/share/lib/dict/words
unchristian
uncle
uncouth
unction

I suppose it's to give you a mechanism to look up "similar" words if you don't have complete control over the lookup-string.

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