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on this file since 7bf3856 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 8 years ago |
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[3ae31e9] | 1 | NAME
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| 2 | field - select fields or columns from a file
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| 3 |
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| 4 | SYNOPSIS
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| 5 |
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| 6 | field [-tc] [-nc] [-pc] n ...
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| 7 |
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| 8 | DESCRIPTION
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| 9 |
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| 10 | The field command copies selected, delimiter-separated fields from
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| 11 | the standard input to the standard output.
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| 12 |
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| 13 | Fields are numbered from 1 and a field may be requested more than once.
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| 14 |
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| 15 | The default delimiter is a tab.
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| 16 |
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| 17 | This can be changed to character c with the option -tc .
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| 18 | If the form -nc is used, the delimiter c is used on input,
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| 19 | but the output is still separated by tabs. If the form -pc
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| 20 | is use, the delimiter c is used on output, but the input is
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| 21 | still delimited by tabs.
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| 22 |
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| 23 | EXAMPLE
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| 24 |
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| 25 | The following command extracts the login names, user and group numbers
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| 26 | from the password file:
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| 27 |
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| 28 |
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| 29 | field -t: 1 3 4 </etc/passwd
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| 30 |
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| 31 | SEE ALSO
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| 32 |
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| 33 | Cut, which is available on System V.
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| 34 | There is a version of cut on this system, but no manual entry yet.
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| 35 |
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| 36 | BUGS/LIMITATIONS
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| 37 |
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| 38 | The number of input or output fields may not exceed 256 and
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| 39 | the maximum line length is 4096 characters.
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| 40 |
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| 41 | AUTHORS
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| 42 |
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| 43 | Adapted from:
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| 44 |
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| 45 | Bourne, S. R.
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| 46 | "The Unix Programming Environment"
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| 47 | p 228-9.
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| 48 |
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| 49 | Modifications by William Silvert and D.N. Lynx Crowe.
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