38 lines
1.2 KiB
Groff
38 lines
1.2 KiB
Groff
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. \" Manual Seite fuer fdup
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. \" @(#)fdup.3 1.1
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. \"
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.if t .ds A \v'-0.77m'\h'0.25n'\z.\h'0.45n'\z.\v'0.77m'\h'-0.70n'A
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.if t .ds O \v'-0.77m'\h'0.25n'\z.\h'0.45n'\z.\v'0.77m'\h'-0.70n'O
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.if t .ds U \v'-0.77m'\h'0.30n'\z.\h'0.45n'\z.\v'0.77m'\h'-.75n'U
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.TH FDUP 3 "15. Juli 1988" "J\*org Schilling" "Schily\'s LIBRARY FUNCTIONS"
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.SH NAME
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fdup() \- returns new file identical to the given file
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.SH SYNOPSIS
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.nf
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.B
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FILE fdup(f)
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.B FILE *f;
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.fi
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.SH DESCRIPTION
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fdup() creates a new file stream which accesses the same file as
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f. The new file will have the same read/write/buffered
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attributes as the old file.
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fdup() can be used to simultaneously read from two different
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positions in a file.
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.SH RETURNS
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Returns the duplicate file, if successful.
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Returns NULL, if it could not create the new stream.
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.SH NOTES
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This call should be used carefully on buffered files open for
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writing. Changes made on one stream might be superseded by
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changes made on the other.
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