Mats Peterson’s Weblog

A collection of desktop icons in PNG , ICO and XPM (X PixMap) format.

A collection of Unix related text files .

A collection of computer programming relted text files .

InfoList is a simple Perl application that lets you edit the INFO list chunk in a RIFF (Resource Interchange File Format) file, such as WAVE, RMID, AVI and sfbk (SoundFont).

MkTags is a simple Perl application that lets you edit the tags in a Matroska file. It can be used with WebM files as well, since this format is based on a profile of Matroska. It supports most of what’s in the official tag specifications. There is no fancy GUI; it simply launches a text editor. It could be viewed as a simplification of the XML that MKVToolNix uses, hence it is relatively open‐ended.

ImgView is a simple image viewer for Unix / POSIX compatible systems. It is free from menus and other GUI gadgets, and controlled primarily by the keyboard. It supports the following image file formats: GIF, JPEG, PCX, PNG, PNM (PBM/PGM/PPM), TIFF and XBM. It is able to scale images with non‐square pixels so that they display correctly on a display with square pixels. It supports RGB, Gray and CMYK ICC profiles in TIFF and JPEG, RGB and Gray ICC profiles in PNG, and RGB ICC profiles in GIF. Display of Exif, XMP and other metadata is realized through the use of ExifTool . Apart from the usual X11 development files, you will also need the following libraries and their respective development files: • libfreeimage • libjpeg • liblcms2 • libpng (see below) • libtiff (see below) • libungif (see below) • libstrutil • libxsimple I have modified libpng, libtiff and libungif slightly for ImgView. They are in the lib directory. Install them into $HOME/imgview (by giving ‘--prefix

VTags is a simple Perl application that lets you edit the Vorbis tags in an Ogg or FLAC file. I have been using this program “in‐house” for many years, so I know that it works well. There is no fancy GUI; it simply launches a text editor.

ID3Tag is a simple Perl application that lets you edit the ID3v1 and/or ID3v2 tag in an MP3 file. I have been using this program “in‐house” for many years, so I know that it works well. There is no fancy GUI; it simply launches a text editor. The program also supports editing of the ID3v2 tag in a DSD stream file (DSF). Please note that ID3v2.4 is not supported.

mf2t is a port of the mf2t/t2mf standard MIDI file manipulation utilities by Piet van Oostrum. One notable enhancement over the original software is the support of 8‐bit textual data. The programs should be able to compile without problems on most common Unix / POSIX platforms. They can also be compiled in Cygwin , but it’s up to you to find out how.

MP4Tags is a simple Perl application that lets you edit the iTunes tags in an MPEG-4 file. I have been using this program “in‐house” for many years, so I know that it works well. There is no fancy GUI; it simply launches a text editor.

MORSE is a Morse code training program for Unix ‐like systems. It is based on MORSE for MS-DOS . This Unix incarnation is not quite as featureful as the DOS one, but it’s still useful. It’s possible to build the program in Cygwin , but it’s up to you to find out how. You will also need the libstrutil , libttyinput and libansicon libraries.

mfcheck is a command line utility that lets you check a standard MIDI file for errors. The program should be able to compile without problems on most common Unix / POSIX platforms. It can also be compiled in Cygwin , but it’s up to you to find out how.