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Old 12-15-2001, 01:08 AM   #1
Registered: Dec 2001
Location: California
Distribution: Red Hat 7.2, Slackware 8.0
Posts: 53

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Arrow Question on Basic Commands

Just a real quick question here.

I was playing around tonight with tar files and I came across something that I wasnt too sure about.

Basically, if I wanted to tar or untar a file, you use the tar cvf <filename>.

My question is, i see some reading where it tells you to just put the command tar cvf <filename> and other places have it tar -cvf <filename>.

My question is, whats the difference between using a - and not using one?

Thanks everyone!
Old 12-15-2001, 01:23 AM   #2
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Registered: Jun 2001
Posts: 1,635

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hmmm... good question. actually, i think it depends on the program. most programs will require a "-" in order to work correctly... others, like tar, might try to intelligently parse thier arguments. remember, every command is really a program of one type or another, written by someone who may or may not have taken the - into account.

just to be safe, always use a "-".


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