Shell Programming and Scripting

Hai,
How to remove the repeated 'Chr's in different sequences. In the given example, Chr19 is repeated in two samples
with the same number i.e. +52245923. How to remove one of the entry in any of the samples and to give the range for each
Chr which is -20 for minimum range value and +120 for maximum range value. For Chr19 it will be displayed as
Chr19:52245903-5224546043 in output file (i.e., for Chr19, +5224593 given. So -20 from this value is min.range and +120 is max. range)
No impotance for the sign (+ or -) in the input data. The final output also givn for easy understanding.


INPUT FILE:
>sample1:1:1:1058:8130#0 5 830
Chr19 +52245923 1
Chr17 +69679873 1
Chr23 +52121254 1
>sample1:1:1:1060:5177#0 5 67
Chr19 +52245923 1
Chr17 -69679873 1
Chr15 +82202352 1
Chr5 +30440548 1

OUTPUT FILE:
>sample1:1:1:1058:8130#0 5 830
Chr19:52245903-52246043
Chr17:69679853-69679993
Chr23:52121234-52121374

>sample1:1:1:1060:5177#0 5 67
Chr15:82202332-82202472
Chr5:30440528-30440628

PLS. HELP ME TO WRITE A SHELL SCRIPT FOR THIS SEQUENCE WHICH HELPS A LOT IN BIOINFORMATICS RESEARCH.
THANKS IN ADVANCE.
i.e., Chr19 and Chr17 are removed from second sample because they are repeated. For all Chrs we replaced the value with a range in the above format shown in output.

Code:

awk ' !a[$1]++ { if(! /^Chr/){print} else { print $1 ":" $2-20 "-" $2+120 } } ' file