Run make
Examples :
./nvsort myfile.txt
./nvsort -t "|" -k 16 myfile.txt // sort file myfile.txt alphabetically on field 16 using | as separator
./nvsort -t "|" -k 1n myfile.txt // sort file myfile.txt numerically on field 1 using | as separator
./nvsort -t "|" -k 1 -k 16 myfile.txt // sort file myfile.txt numerically on fields 1 and 16 using | as separator
./nvsort -t "|" -r -k 1 -k 16 myfile.txt // reverse sort file myfile.txt numerically on field 1 using | as separator