echo Making directories
mkdir /usr/spool /usr/spool/atjobs
chmod 755 /usr/spool /usr/spool/atjobs
echo Compiling source
gcc -o at at.c -O6
gcc -o atrun atrun.c -O6
echo Installing
strip at atrun
mv atrun /usr/lib
mv at /bin
chmod 755 /bin/at
chown root /usr/lib/atrun /bin/at
chmod 4700 /usr/lib/atrun
chmod 4755 /bin/at
echo Be sure to put the line \'* * * * *  /usr/lib/atrun\' in root\'s crontab file.