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30 .\" @(#)split.1 8.3 (Berkeley) 4/16/94
31 .\"
32 .Dd May 28, 2007
33 .Dt SPLIT 1
34 .Os
35 .Sh NAME
36 .Nm split
37 .Nd split a file into pieces
38 .Sh SYNOPSIS
39 .Nm
40 .Op Fl a Ar suffix_length
41 .Oo
42 .Fl b Ar byte_count Ns Oo Li k|m Oc |
43 .Fl l Ar line_count
44 .Fl n Ar chunk_count
45 .Oc
46 .Op Ar file Op Ar name
47 .Sh DESCRIPTION
48 The
49 .Nm
50 utility reads the given
51 .Ar file
52 and breaks it up into files of 1000 lines each.
53 If
54 .Ar file
55 is a single dash or absent,
56 .Nm
57 reads from the standard input.
58 .Ar file
59 itself is not altered.
60 .Pp
61 The options are as follows:
62 .Bl -tag -width Ds
63 .It Fl a
64 Use
65 .Ar suffix_length
66 letters to form the suffix of the file name.
67 .It Fl b
68 Create smaller files
69 .Ar byte_count
70 bytes in length.
71 If
72 .Ql k
73 is appended to the number, the file is split into
74 .Ar byte_count
75 kilobyte pieces.
76 If
77 .Ql m
78 is appended to the number, the file is split into
79 .Ar byte_count
80 megabyte pieces.
81 .It Fl l
82 Create smaller files
83 .Ar line_count
84 lines in length.
85 .It Fl n
86 Split file into
87 .Ar chunk_count
88 smaller files.
89 .El
90 .Pp
91 If additional arguments are specified, the first is used as the name
92 of the input file which is to be split.
93 If a second additional argument is specified, it is used as a prefix
94 for the names of the files into which the file is split.
95 In this case, each file into which the file is split is named by the
96 prefix followed by a lexically ordered suffix using
97 .Ar suffix_length
98 characters in the range
99 .Dq Li a-z .
100 If
101 .Fl a
102 is not specified, two letters are used as the suffix.
103 .Pp
104 If the
105 .Ar name
106 argument is not specified,
107 .Ql x
108 is used.
109 .Sh STANDARDS
110 The
111 .Nm
112 utility conforms to
113 .St -p1003.1-2001 .
114 .Sh HISTORY
115 A
116 .Nm
117 command appeared in
118 .At v6 .
119 .Pp
120 The
121 .Fl a
122 option was introduced in
123 .Nx 2.0 .
124 Before that, if
125 .Ar name
126 was not specified,
127 .Nm
128 would vary the first letter of the filename
129 to increase the number of possible output files.
130 The
131 .Fl a
132 option makes this unnecessary.