Perl, acronym for Practical Extraction and Reporting Language is a scripting language originally developed by Larry Wall in 1987. It is appropriate to write from the simplest to the most complex apps. In particular, in this book it is shown how versatile Perl is to handle different data formats not only those used in the seismic industry but also those used in the oil industry, as well as to handle the big amount of information that is generated during the recording of seismic surveys.