uniq.1 (827B)
1 .Dd 2015-10-08 2 .Dt UNIQ 1 3 .Os sbase 4 .Sh NAME 5 .Nm uniq 6 .Nd report or filter out repeated lines in a file 7 .Sh SYNOPSIS 8 .Nm 9 .Op Fl c 10 .Op Fl d | u 11 .Op Fl f Ar num 12 .Op Fl s Ar num 13 .Op Ar input Op Ar output 14 .Sh DESCRIPTION 15 .Nm 16 reads the 17 .Ar input 18 file and writes one copy of a line from each group of consecutive 19 duplicate lines to the 20 .Ar output 21 file. 22 If no 23 .Ar input 24 file is given 25 .Nm 26 reads from stdin. 27 If no 28 .Ar output 29 file is given 30 .Nm 31 writes to stdout. 32 .Sh OPTIONS 33 .Bl -tag -width Ds 34 .It Fl c 35 Prefix each line with the number of consecutive occurrences in 36 .Ar input . 37 .It Fl d | Fl u 38 Print duplicate | unique lines only. 39 .It Fl f Ar num | Fl s Ar num 40 Ignore the first 41 .Ar num 42 fields | characters in each input line when doing comparisons. 43 .El 44 .Sh STANDARDS 45 The 46 .Nm 47 utility is compliant with the 48 .St -p1003.1-2013 49 specification.