Perl Output

americanforest · 11-04-2007, 04:28 PM

I have a perl script which I run like so:

perl_sript < input_text_file

The script formats the text and prints it out in the shell. How can I get the script to write its output (what it writes out in the shell) to a new file.

Sorry if its obvious but I'm a noob.

syg00 · 11-04-2007, 04:47 PM

The "<" you used redirects the input (STDIN) for your code; ">" does likewise for output (STDOUT).
Try playing with that and see how you go.

matthewg42 · 11-04-2007, 05:15 PM

Using re-direction like syg00 said, or in your program, assuming you are using print statements, you can do something like this:

Code:

#!/usr/bin/perl

open(OUTPUT, ">somefile") || die "cannot open somefile for writing : $!";

print OUTPUT "whatever you want to output\n";
...

close(OUTPUT);

ghostdog74 · 11-04-2007, 05:18 PM

save this example code

Code:

while (<>) {
 print ;
}

and run it on the shell prompt like : perl myscript < file > outfile. Here i use shell's redirection to create the output file. You can also create the output file inside Perl script, by using open and redirection operator as well
perldoc -f open for more info

chrism01 · 11-04-2007, 10:34 PM

For 'or' vs '||' see here: http://www.developertutorials.com/tu...616/page1.html

bigearsbilly · 11-05-2007, 05:38 AM

generically

script < input_text_file > output_file