Mini Shell

#!/usr/bin/sh
# Extract ASCII text from a PostScript file.  Usage:
#	ps2ascii [infile.ps [outfile.txt]]
# If outfile is omitted, output goes to stdout.
# If both infile and outfile are omitted, ps2ascii acts as a filter,
# reading from stdin and writing on stdout.

# This definition is changed on install to match the
# executable name set in the makefile
GS_EXECUTABLE=gs

trap "rm -f _temp_.err _temp_.out" 0 1 2 15

OPTIONS="-q -dSAFER -sDEVICE=txtwrite"
if ( test $# -eq 0 ) then
    $GS_EXECUTABLE $OPTIONS -o - -
elif ( test $# -eq 1 ) then
    $GS_EXECUTABLE $OPTIONS -o - "$1"
else
    $GS_EXECUTABLE $OPTIONS -o "$2" "$1"
fi