Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/doc/cleanps
#!/bin/rc if(! ~ $#* 1){ echo usage: cleanps infile >[1=2] exit usage } { echo %!PS-Adobe-2.0 cat /sys/doc/preamble grep -v '^%%DocumentFonts' $1 } > cleanps.tmp mv cleanps.tmp $1