Convert a Netpbm image to a TrueVision Targa file. More information: https://netpbm.sourceforge.net/doc/pamtotga.html.
pamtotga path/to/file.pam > path/to/output.tga
pamtotga -cmap|cmap16|mono|rgb path/to/file.pam > path/to/output.tga
pamtotga -version