Code:
$ cat in.txt
AcquiredMethod, AssetID, AssetLifecycleStatus, SC1, SC2, DC1, DC2
Vendor Owned, ATESTIMPORT10, Down, a, b, c, d
$
$
$ cat sply.sh
#!/usr/bin/ksh
nawk -F"," 'BEGIN{OFS=","}{ if (NR==1) {
print "AcquiredMethod, AssetID, AssetLifecycleStatus, C, S/D, 1or2"
} else {
print $1,$2,$3,$4,"S",1
print $1,$2,$3,$5,"S",2
print $1,$2,$3,$6,"D",1
print $1,$2,$3,$7,"D",2
}}' in.txt
$
$
$ ./sply.sh
AcquiredMethod, AssetID, AssetLifecycleStatus, C, S/D, 1or2
Vendor Owned, ATESTIMPORT10, Down, a,S,1
Vendor Owned, ATESTIMPORT10, Down, b,S,2
Vendor Owned, ATESTIMPORT10, Down, c,D,1
Vendor Owned, ATESTIMPORT10, Down, d,D,2