can perl make new files

maddfisherman has asked for the wisdom of the Perl Monks concerning the following question:

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Re: can perl make new files by CheeseLord (Deacon) on Aug 17, 2001 at 03:27 UTC
Indeed it can. Like this: `open FILE, "> newfilename";` If you need more information, look at `open`, or ask a more detailed question so we can help you out better. His Royal Cheeziness	[reply] [d/l]
Re: can perl make new files by tachyon (Chancellor) on Aug 17, 2001 at 04:10 UTC
Here is a short script that demonstates the basics of file handling. When you run this script it reads itself in, writes a copy to a file the the same name and a .clone extension and then opens this new file and appends a message to it. # $0 contains the name of the running script (ie this one) # $! contains error messages, if any # open file for reading open ME, "<$0" or die "Can't open myself, Perl says $!\n"; my @essence = <ME>; close ME; # open file for writing (clobber existing, create if required) # name will be whatever this script called with .clone extension open MY, ">$0.clone" or die "Failed to clone myself $!\n"; print MY @essence; close MY; # open file for appending (add to end of file) open CLONE, ">>$0.clone" or die "Clone has disappeared $!\n"; print CLONE "\n\nI am just a clone of the program $0\n"; print CLONE "Just Another Perl Hacker\n", scalar localtime; close CLONE; [download] cheers tachyon s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print	[reply] [d/l]
(ichimunki) Re: can perl make new files by ichimunki (Priest) on Aug 17, 2001 at 04:29 UTC
To get a sense of all the things Perl can do, poke around Code Catacombs (for example scripts) and the Library (for information about Perl itself)-- in the Library pay special attention to perlfunc. If you have Perl installed on your computer, you can get the same information that you will find in the Library by typing 'perldoc' at a command line. If you are curious about a specific function and you think you know the name of the function, you can do 'perldoc -f function-name'.	[reply]
Re: can perl make new files by perigeeV (Hermit) on Aug 17, 2001 at 04:20 UTC
For the sake of completeness I'll add sysopen, but based on you're question I'd stay with plain open. Try the supplied tutorial that comes with perl.	[reply]
Re: can perl make new files by RayRay459 (Pilgrim) on Aug 17, 2001 at 19:27 UTC
if you use an open(File,$newfilename) \|\| die "Can't create $newfilename: $!"; that should do it. Ray	[reply]


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