/usr/lib/fastdnaml/bin/restart is in fastdnaml 1.2.2-11+b1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #! /bin/sh
#
# restart shell script
#
if test $# -ne 1; then echo "Usage:  $0  checkpoint_file"; exit; fi
file="$1"
if test ! -f "$file"; then echo "$0: $file: File not found"; exit; fi
lastTwoEnds=`egrep -n '((;)|(\)\.))[ 	]*$' "$file" |
             sed 's/^\([0-9]*\):.*$/\1/' |
             tail -2`
nFound=`echo $lastTwoEnds | wc -w`
if test $nFound -eq 0; then
    echo "$0: Unable to locate end of tree(s) in file"
    exit
fi
read first_line
echo "$first_line R"
cat -
# tail -1 "$file"
if test $nFound -eq 1; then
    cat "$file"
else
    penultimateEnd=`echo $lastTwoEnds | sed 's/^\([0-9]*\).*$/\1/'`
    lastStart=`expr $penultimateEnd + 1`
    tail +$lastStart "$file"
fi
 |