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The numeric ranges of the Unix command "cut"
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Use single numbers to extract one specific field:
$ echo "one:two:three:four:five:six" | cut -d : -f 1
one
$ echo "one:two:three:four:five:six" | cut -d : -f 4
four
Use commas to inform more than one field:
$ echo "one:two:three:four:five:six" | cut -d : -f 1,4
one:four
Note that inverting the order will *not* invert the output:
$ echo "one:two:three:four:five:six" | cut -d : -f 4,1
one:four
Use an hyphen to inform a range of fields, from one to four:
$ echo "one:two:three:four:five:six" | cut -d : -f 1-4
one:two:three:four
If you omit the second range number, it matches until the last:
$ echo "one:two:three:four:five:six" | cut -d : -f 4-
four:five:six
cut is cool, isn't it?
> Note: To automatically test all the shell commands in this article,
> just run: `clitest --prefix tab cut.md`
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