/usr/bin/pal2rgb: invalid option -- '-'
LIBTIFF, Version 4.7.2
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.

Convert a palette color TIFF image to a full color image

usage: pal2rgb [options] input.tif output.tif
where options are:
 -p contig	pack samples contiguously (e.g. RGBRGB...)
 -p separate	store samples separately (e.g. RRR...GGG...BBB...)
 -r #		make each strip have no more than # rows
 -C 8		assume 8-bit colormap values (instead of 16-bit)
 -C 16		assume 16-bit colormap values

 -c lzw[:opts]	compress output with Lempel-Ziv & Welch encoding
    #  set predictor value
    For example, -c lzw:2 to get LZW-encoded data with horizontal differencing
 -c zip[:opts]	compress output with deflate encoding
    #  set predictor value
 -c packbits	compress output with packbits encoding
 -c none	use no compression algorithm on output