Date Difference function in unix

Post date: Nov 12, 2014 12:19:8 AM

[gpadmin@sachi scripts]$ datediff (){

case $1 in

-s) sec=1; shift;;

-m) sec=60; shift;;

-h) sec=3600; shift;;

-d) sec=86400; shift;;

*) sec=86400;;

esac

dte1=$(date2stamp $1)

dte2=$(date2stamp $2)

diffSec=$((dte2-dte1))

if ((diffSec < 0)); then abs=-1; else abs=1; fi

echo $((diffSec/sec*abs))

}

[gpadmin@sachi scripts]$ datediff -s "2006-10-01" "2006-10-02"

86400

[gpadmin@sachi scripts]$ datediff -m "2006-10-01" "2006-10-02"

1440

[gpadmin@sachi scripts]$ datedDiff -h "2006-10-01" "2006-10-02"

[gpadmin@sachi scripts]$ datediff -d "2006-10-01" "2006-10-02"