I am trying to run bp_genbank2gff3.pl (bioperl package) from another perl script that gets a genbank as its argument. This does not work (no output files are generated): my $command = "bp_genbank2gff3.pl -y -o /tmp $ARGV[0]"; open( my $command_out, "-|", $command ); close $command_out; but this does open( my $command_o...
I need to detect if a filehandle is using binary mode or text mode - this is required in order to be able to encode/decode str/bytes. How can I do that? When using binary mode myfile.write(bytes) works, and when in text mode myfile.write(str) works. The idea is that I need to know this in order to be able to encode/decode the argument ...
I feel stupid for asking this, but I've tried a couple things and I'm not sure where to go with it. From the Expect.pm documentation: $object->log_file("filename" | $filehandle | \&coderef | undef) Log session to a file. All characters send to or received from the spawned process are written to the file. I'd like to pass t...
Lets say there are multiple functions throughout my program that need to append data to a certain file. I open the file at the beginning of the program with a global file handle so I can append to it wherever I need to. (Note that I know I could pass the file handle as an argument to the functions but that is not the purpose of this ques...
I've got multiple access logs in the logs directory, following the naming convention below: access.log.1284642120 access.log.1284687600 access.log.1284843260 Basically, the logs are "rotated" by Apache per day, so they can be sorted in order. I am trying to "read them one after another", so that they can be treated as one log file. ...
I have some subroutines that I call like this myWrite($fileName, \@data). myWrite() opens the file and writes out the data in some way. I want to modify myWrite so that I can call it as above or with a filehandle as the first argument. (The main reason for this modification is to delegate the opening of the file to the calling script ...
Hi, I'm developing an iphone app, I need to create a certain size file on filesystem and filled with NO data first, then seek to a offset and write data when get data from somewhere else How can I do it? ...
In perldoc perlvar, I read this: Note that currently "ARGV" only has its magical effect within the "<>" operator; elsewhere it is just a plain filehandle corresponding to the last file opened by "<>". In particular, passing "*ARGV" as a parameter to a function that expects a filehandle may not cause your function to a...