import sys

# if the database is not supplied on the commandline
if sys.argv[1] == None:
    sys.exit(2)

target = open("log", 'r')
print sys.argv[1]
database_to_merge = str(sys.argv[1])


for line in target:
    if str(line[:-1]) == database_to_merge:
        print "Already merged this database"
        target.close()
        sys.exit(3)
    print line
   
target.close()