Convert a TrueVision Targa file to a Netpbm image. More information: https://netpbm.sourceforge.net/doc/tgatoppm.html.
tgatoppm {{path/to/file.tga}} > {{path/to/output.ppm}}
stdout:tgatoppm {{[-h|-headerdump]}} {{path/to/file.tga}} > {{path/to/output.ppm}}
tgatoppm {{[-a|-alphaout]}} {{path/to/transparency_file.pgm}} {{path/to/file.tga}} > {{path/to/output.ppm}}
tgatoppm {{[-v|-version]}}