Always use 3-argument open
Appending to files
Command line counter with plain text file back-end
Count the frequency of words in text using Perl
Don't Open Files in the old way
How to check if a string is all upper case (lower case) characters?
How to improve my Perl program?
How to merge one text file to the end of another text file?
How to replace a string in a file with Perl
How to split a text file line by line in Perl
How to write to the beginning of a file?
Old style open
Open and read from text files
Open file all
Open file to read and write in Perl, oh and lock it too
Open file with error handling
Open or die
Writing to files with Perl
Don't miss the