JSI Tip 0686 - Freeware Fsort.

FSort is a freeware command line sort utility that is faster than sort for large files.

Place it in your path and type fsort /?:

FSORT -- Text File Sort Utility v1.1.0 Usage: [-i]inpFile [-o]outFile [-k]col:wid:d,...] [-d][kf] [-cyn] [-lyn] Where: [-i]inpFile             Input file to sort [console] [-o]outFile             Sorted Output file [console] [[-k]col:wid[:{ad}],]   Sort key(s),direction [1::a] -d[kf]                 Eliminate Duplicates by Key or [Full] [keep]? -c[yn]                 Case is significant? [y] -l[yn]                 Log output messages? [y] Example: fsort -imyinput.dat sorted.out -k1:10,12:2:d -dn -cy (Sort myinput.dat to sorted.out, ascending 10-char key at Col-1, 2-char at Col-12 descending, keep duplicates, case significant)