Command-line Perl scripts can make adminstering a UNIX box easier by replacing certain commands with some routine scripts. Find out how to take advantage of this approach. Perl is everywhere. Most ...

A similar Perl pie command might change Windows (DOS) style line endings (carriage return, linefeed) to Unix style line endings (linefeed only) or to replace other bytes in a file whether the file is ...

An associative array is an array which uses strings as indices instead of integers. To see how associative arrays work, we’re going to look at both the Korn shell and Perl, though only the newest ...

In my last article for Linux Journal's web edition, I discussed a web-based program that queried an SQL database and output a native Excel file. That article was based on a program I wrote for a ...

Until January of 2002, programmers wanting a book on Perl/Tk had one option: Learning Perl/Tk, by Nancy Walsh. Although well researched and accurate, it gave the reader only a basic familiarity with ...

A lot of information is available about individual files on a Unix system. For example, the ls -l command will display the permissions matrix and ls -i will display a file’s inode. But, if we want to ...