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6_functions
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writeb
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2001-03-21
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Synopsis:
$write(<fd> <text>)
$writeb(<fd> <text>)
Technical:
This function writes the given text to the given file descriptor. A
newline is automatically appended to the text. The $writeb() variant
does the same thing, except the newline is not automatically appended.
Practical:
This function is useful for saving information to an external file. It
is most often used in scripts for saving configuration settings and the
like. The $writeb() function is useful for writing to binary files, or
for writing lines to a file incrementally.
Returns:
-1 if file descriptor does not exist
> -1 number of bytes written (text length plus newline, if applicable)
Examples:
$write(7 blah blah) writes "blah blah" plus NL to fd "7"
$write(foo bar) "foo" not an fd, writes nothing
$writeb(7 blah blah) writes "blah blah" to fd "7"
$writeb(foo bar) "foo" not an fd, writes nothing
See Also:
close(6); open(6); read(6)