Simple pointer kind of question

I'm trying to figure out some cgi code which has the statment &readparse(*input); I know readparse is a subroutine, but what is "*input"? Is that a variable? Reference? Parameter? What? Thanks. -s _ Get your FREE download of

Testing for Success

Tony and Chas, thanks for the help. First problem was using switched from DOS PC to UNIX system which had no idea what #! c:\perl was since it wanted #! /usr/global/perl. Don't really understand how $exit_value = $? >> 8; $signal_num = $? & 127; $dumped_core = $? &

Testing for command success

I'd like to test the following command to see if it ran successfully? Have no idea how or which variable stores the success of a command ($!, $], $_ )? system "tar cvf ../test.tar *.grib"; Tried: if (system "tar cvf ../test.tar *.grib";) { print "\nSuccess!\n";} got: "Command not found"

Inverse tangent function?

Trying to figure out what the inverse tangent function is... (as in FORTRAN arctan) Tried using: $ result = atan2(u/v); print "result = $result \n "; Got error: "Too few arguments". Any suggestions on either the function or where to look up math functions for PERl? Couldn't find it in "Progr

LWP binary file retrievals?

Is it possible to use LWP::Simple to retrieve a binary file (i.e. a .netCDF file)? Using the following code I can retrieve what I'm guessing are parts of the file. That is, what is retrieved is always 3871 bytes even though the file is actually much larger. Worse, I can not read the .netcdf

Simple LWP web retrieval question

I tried the following code to retrieve netCDF data files from a website. use LWP::Simple getstore("source_url"/", "input_filename"); The problem is when I go to read the netCDF file I can't. It is as if it does an ASCII transfer instead of a binary or some such thing? Don't really know.

simple file reading question

I have a file containing a list of names, for example: S2000123456.met S2000123457.ozone S2000123458.hdr S2000234569.met . . etc. I'm looking for a short way to read these filenames onto an array. I tried: my @fils = <$indir/filename>; . but this just gives me the name of my input

s/// Question from Newbie

I'm trying to replace the ^ in a filename, which by the way, I did not create. Here is the filename: Wind19^144^0.0^100^.grib Here is my test code: $a = "144^0.0^100^"; $a = s/^/_/g; # replace ^ with underscore character for ftp print "$a,"\n"; exit; Here is what gets printed: 144^0.0^

Thanks on chomp on to localtime

Thank you for the detail explaination on chomp! Where can I get more info on using localtime() function or POSIX::strftime? Thanks, again. -s _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- To un

chomp question

What is happening here? $date = `/bin/date + %y%m%d`; print "$date"; prints >20010914 > But if I add: $a = chomp($date); print "$a"; it prints > What happens to the number? Why doesn't chomp just get rid of the newline? Thank you in advance. _

CPAN simple module

Does anyone know of a reasonably simple, CPAN, stand-alone module? By stand-alone, I mean it doesn't require any other modules to be previously installed. I'm trying to figure out how to install a module and get it to work. Originally I was trying to do this on an SGI network, for the time bei

CPAN simple module

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LWP Module installation on SGI/IRIX

This is my first post. My knowledge base is UNIX/Intermediate, IRIX system admin/beginner and PERL/beginner. The short question: After one follows the installation procedure for a module, that is, download, gunzip, tar, ... then perl Makefile.PL make make test make install How does one get