FAQ 5.17 How can I open a file with a leading ">" or trailing blanks?
- From: PerlFAQ Server <brian@xxxxxxxxxxxxxx>
- Date: Sat, 30 Dec 2006 00:03:02 -0800
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5.17: How can I open a file with a leading ">" or trailing blanks?
(contributed by Brian McCauley)
The special two argument form of Perl's open() function ignores trailing
blanks in filenames and infers the mode from certain leading characters
(or a trailing "|"). In older versions of Perl this was the only version
of open() and so it is prevalent in old code and books.
Unless you have a particular reason to use the two argument form you
should use the three argument form of open() which does not treat any
charcters in the filename as special.
open FILE, "<", " file "; # filename is " file "
open FILE, ">", ">file"; # filename is ">file"
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