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32 .\" @(#)jot.1 8.1 (Berkeley) 6/6/93
40 .Nd print sequential or random data
48 .Op reps Op begin Op end Op s
52 utility is used to print out increasing, decreasing, random,
53 or redundant data, usually numbers, one per line.
55 The following options are available:
56 .Bl -tag -width indent
58 Generate random data instead of the default sequential data.
66 with the generated data appended to it.
67 Octal, hexadecimal, exponential,
70 and right-adjusted representations
71 are possible by using the appropriate
73 conversion specification inside
75 in which case the data are inserted rather than appended.
77 This is an abbreviation for
80 Print data separated by
82 Normally, newlines separate data.
84 Do not print the final newline normally appended to the output.
86 Print only as many digits or characters of the data
87 as indicated by the integer
91 the precision is the greater of the precisions of
97 option is overridden by whatever appears in a
103 The last four arguments indicate, respectively,
104 the number of data, the lower bound, the upper bound,
105 and the step size or, for random data, the seed.
106 While at least one of them must appear,
107 any of the other three may be omitted, and
108 will be considered as such if given as
110 Any three of these arguments determines the fourth.
111 If four are specified and the given and computed values of
113 conflict, the lower value is used.
114 If fewer than three are specified, defaults are assigned
115 left to right, except for
117 which assumes its default unless both
123 Defaults for the four arguments are, respectively,
124 100, 1, 100, and 1, except that when random data are requested,
129 is expected to be an unsigned integer,
130 and if given as zero is taken to be infinite.
134 may be given as real numbers or as characters
135 representing the corresponding value in
137 The last argument must be a real number.
139 Random numbers are obtained through
150 prints 21 evenly spaced numbers increasing from -1 to 1.
153 character set is generated with
156 and the strings xaa through xaz with
159 while 20 random 8-letter strings are produced with
160 .Dl "jot -r -c 160 a z | rs -g 0 8"
164 may be obtained through
169 substitution commands applying to lines 2, 7, 12, etc. is
171 .Dl jot -w %ds/old/new/ 30 2 - 5
173 The stuttering sequence 9, 9, 8, 8, 7, etc. can be
174 produced by suitable choice of step size,
178 and a file containing exactly 1024 bytes is created with
179 .Dl jot -b x 512 > block
181 Finally, to set tabs four spaces apart starting
182 from column 10 and ending in column 132, use
183 .Dl expand -`jot -s, - 10 132 4`
185 and to print all lines 80 characters or longer,
186 .Dl grep `jot -s \&"\&" -b \&. 80`
189 The following diagnostic messages deserve special explanation:
191 .It "illegal or unsupported format '%s'"
192 The requested conversion format specifier for
195 .Dl %[#][ ][{+,-}][0-9]*[.[0-9]*]?
201 .Dl {c,e,f,g,D,E,G,O,U,X}
202 .It "range error in conversion"
203 A value to be printed fell outside the range of the data type
204 associated with the requested output format.
205 .It "too many conversions"
206 More than one conversion format specifier has been supplied,
207 but only one is allowed.