Tag: Tips & Tricks

Countdown bash script:

#!/bin/bash
 
if [ "$#" -lt "2" ] ; then
    echo "Incorrect usage ! Example:"
    echo './countdown.sh -d  "Jun 10 2011 16:06"'
    echo 'or'
    echo './countdown.sh -m  90'
    exit 1
fi
 
now=`date +%s`
 
if [ "$1" = "-d" ] ; then
    until=`date -d "$2" +%s`
    sec_rem=`expr $until - $now`
    echo "-d"
    if [ $sec_rem -lt 1 ]; then
        echo "$2 is already history !"
    fi
fi
 
if [ "$1" = "-m" ] ; then
    until=`expr 60 \* $2`
    until=`expr $until + $now`
    sec_rem=`expr $until - $now`
    echo "-m"
    if [ $sec_rem -lt 1 ]; then
        echo "$2 is already history !"
    fi
fi
 
 
while [ $sec_rem -gt 0 ]; do
    clear
    date
    let sec_rem=$sec_rem-1
    interval=$sec_rem
    seconds=`expr $interval % 60`
    interval=`expr $interval - $seconds`
    minutes=`expr $interval % 3600 / 60`
    interval=`expr $interval - $minutes`
    hours=`expr $interval % 86400 / 3600`
    interval=`expr $interval - $hours`
    days=`expr $interval % 604800 / 86400`
    interval=`expr $interval - $hours`
    weeks=`expr $interval / 604800`
    echo "----------------------------"
    echo "Seconds: " $seconds
    echo "Minutes: " $minutes
    echo "Hours:   " $hours
    echo "Days:    " $days
    echo "Weeks:   " $weeks
    sleep 1
done

salviamo il file come bash-countdown.sh:

$ chmod +x bash-countdown.sh

adesso siamo pronti per il conto alla rovescia:

countdown per le ferie:

$ ./bash-countdown.sh -d "AUG 07 2010"

sab 12 giu 2010, 16.49.59, CEST
—————————-
Seconds:  0
Minutes:  10
Hours:    7
Days:     6
Weeks:    7

countdown di 90 minuti:

$ ./bash-countdown.sh -m 90

countdown per Inghilterra-Stati Uniti stasera:

$ ./bash-countdown.sh -d 20:30:00

Questo lo script, per chi ha bisogno di un applet, esiste timer-applet.