[sloved] OT: A question about bash scripting

[Ralf Mardorf <ralf.mardorf@alice-dsl.net>]

On Mon, 2012-10-29 at 18:52 -0400, Neal Murphy wrote:
> What's the '+100' supposed to do?

 ### Killall and Restore session
 started=$(date +%s)
 SECONDS=0
 sleep 2
 
 ### Time
 month=$(date +%B)
 mon=$(date +%b)
 d_y_t=$(date '+/%d/%Y %T')
 done=$(date +%s)
 done_2=$SECONDS

 ((seconds=(done-started)-(((done-started)/60)*60)))
 seconds="0$seconds" ### THIS EXPLAINS AND REPLACES THE +100
 min_sec=$(((done-started)/60))":"${seconds: -2}
 echo
 echo    "Attended time to restore session:         $min_sec"
 echo -n "Session restored at " ; printf %9.9s $month ; echo $d_y_t
 echo

 ### THIS IS WHAT I LIKE THE BEST
 ((min=(done_2/60))) ; ((sec=(done_2%60)))
 echo
 printf "Attended time to restore session: %9d:%02d\n" $min $sec
 printf "Session restored at %9.9s%s\n" "$month" "$d_y_t"
 echo

http://lists.debian.org/debian-user/2012/10/msg01286.html

Regards,
Ralf