pbmtoicon
converts PBM bitmaps to Sun icon format used by older Sun workstations
TLDR
Convert PBM to Sun icon format
$ pbmtoicon [input.pbm] > [output.icon]
SYNOPSIS
pbmtoicon [file]
DESCRIPTION
pbmtoicon converts PBM bitmaps to Sun icon format used by older Sun workstations. Part of Netpbm toolkit.
SEE ALSO
icontopbm(1), pbmtosunicon(1)