Shell Programming and Scripting

Reason : ABC
12345-0023
32123-5400
32442-5333

Reason : DEF
42523-3453
23345-3311

Reason : HIJ
454553-0001

Reason : ABC
12345-0023
32442-5333
32123-5400


Reason : DEF
23345-3311
42523-3453


Reason : HIJ
454553-0001

#!/bin/sh

while read LINE
do
        # First line of a group
        if [ "${LINE:0:6}" == "Reason" ]
        then
                # Print the header
                echo "${LINE}"
                # Keep looping until we hit a blank line.
                while IFS="-" read A B && [ ! -z "${A}" ]
                do
                        # Reverse the order of the items so they can be sorted
                        echo "${B}-${A}"
                done | sort -u --key=1,4 |
                # Reverse the order back
                while IFS="-" read B A
                do
                        echo "${A}-${B}"
                done

                # Add a blank line to the end.
                echo
        fi
done < data

awk -vRS="" '{system("echo \""$0"\" |sort -n -t- -k2");print ""}' file

sed '/^$/d' TestGroup.txt | \
gawk 'BEGIN{arrayIndex=0}
{
	if($1 == "Reason")
	{
		if(arrayIndex != 0)
		{
			arrayElements = asort(myArray)
			for(i=1; i <= arrayElements; i++)
			{
				print myArray[i]
			}
		}
		print $0
		arrayIndex=0
		delete myArray
	}
	else
	{
		myArray[arrayIndex]=$0
		arrayIndex++
	}
}END{
		if(arrayIndex != 0)
		{
			arrayElements = asort(myArray)
			for(i=1; i <= arrayElements; i++)
			{
				print myArray[i]
			}
		}
	}'

while read -r l; do if [[ "$l" != "" ]] ; then echo "$l">>tmp ; else sort -t- -k2n tmp; echo "" ; rm -f tmp ; fi ; done<infile ; more tmp ; rm -f tmp
Reason : ABC
12345-0023
32442-5333
32123-5400
 
Reason : DEF
23345-3311
42523-3453
 
Reason : HIJ
454553-0001