bin/u2d


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#!/bin/sh
if [ "$#" -eq 0 ] ; then
    printf >&2 'u2d: Need a filename\n'
    exit 2
fi
r=$(printf '\r')
for fn ; do
    ed -s -- "$fn" <<EOF || ex=1
g/[^$r]\$/ s/\$/$r/
g/^\$/ s/\$/$r/
w
EOF
done
exit "${ex:-0}"