make.group.file

###########################################################################
#First try at manually making a group file
#Keeps anything with ">" in it

grep -e '^>' V2.fasta > test.fasta

#Gets rid of everything after "_"

sed 's/>//' test.fasta > test2.fasta
sed 's/_.*//' test2.fasta > test3.fasta

#Gets rid of everything before "_"

sed 's/.*_//' test2.fasta > test4.fasta

#Gets rid of random tag along DNA sequences

sed 's/\s.*$//' test4.fasta > test5.fasta

#Combine files together

paste -d" " test5.fasta test3.fasta > test.groups

#############################################################################
###Alternative maybe right method for group file in twin study

# get rid of all spaces like before
#but this time need to keep full length of name
sed 's/\s.*$//' test2.fasta > test5.fasta

#Combine the two files together in a column format
paste -d" " test5.fasta test3.fasta > test.groups