Shell Programming and Scripting

a 5
b 9
b 620
a 710
b 230
a 330
b 1910
a 2020

greater than 0 and less than 600
greater than 600 and less than 1800
greater than 1800

a[0-600] = 2
a[600-1800] = 1
a[above 1800] = 1
b[0-600] = 2
b[600-1800] = 1
b[above 1800] = 1

for i in `awk '{print $1}' /home/ABC/gtacMonitoring/monLogs/ngnDurationLog|sort|uniq`
do
echo "$i"
awk -v var="$i" '{if($1==var && ($2 > 0 && $2 < 600)) {print "[Between 00-10 min]:"} else if($1==var && ($2 >= 600 && $2 < 1800)) {print "[Between 10-30 min]:"} else if($1==var && $2 >= 1800) {print "[More than  30 min]:"}}' /home/ABC/gtacMonitoring/monLogs/ngnDurationLog|sort|uniq -c|awk -F"[" '{print "["$2,$1}'
echo
done

awk -v THRSTR="600 1800" '
BEGIN   {n = split (THRSTR, THR)
        }
        {for (i=1; i<=n; i++)   {if ($2 <= THR[i]) break
                                }
         RES[$1,i]++
        }

END     {for (r in RES) {split (r, T, SUBSEP)
                         print T[1], "[" THR[T[2]-1] "-" THR[T[2]] "] = " RES[r]
                        }
        }
'   file

a [-600] = 2
a [600-1800] = 1
a [1800-] = 1
b [-600] = 2
b [600-1800] = 1
b [1800-] = 1