pnmtosgi
Convert a PNM file to an SGI image file. tldr-pages
On several platforms
Several platforms
Convert a PNM image to an SGI image
pnmtosgi path/to/input.pnm >path/to/output.sgiIdentifyDisable or enable compression
pnmtosgi -verbatim path/to/input.pnm >path/to/output.sgiIdentifyWrite the specified string into the SGI image header's imagename field
pnmtosgi -imagename string path/to/input.pnm >path/to/output.sgiIdentify