Hello monks,

So I have been toying with this concept these few days on my Ubuntu machine using Getopt::Long, what I basically aim to achieve is to pass parameters to the program such as the following:

$perl ReadingMultipleFiles.pl -param1 arg -param2 arg --file *.txt

So my program receives many other options that are strings or integers and I aim to run it on an entire folder of .txt files such that the user has an option of either calling the program on one file by passing the file name in this fashion

$perl ReadingMultipleFiles.pl -param1 arg -param2 arg --file foo.txt

or just run it universally on all files via a glob (*) from the STDIN as mentioned above.

Trying various tricks the closer I got to achieving this was through implementing options with multiple values or storing in a hash, however, in both cases, only one file from a group of files is read before the program exits.

#strictures on
#ReadingMultipleFiles.pl
my @files;
GetOptions( #many other integer and string options
    ....
    "file=s"=>\@files
    .....
    );
foreach(@files){
    print $_, "\n"; #only one file from a group
    }

###
#a hash based way
###
use Data::Dumper;
my %hash;
GetOptions(\%hash, 'files=s@');
print Dumper(\%hash); #only one file from a group
[download]

I can't think of another way to do this and I don't want to drastically alter my program design so if I can get you to my rescuing esteemed ones it will be awesome.

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.