| [9] | 1 | .TH SORT 1
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| 2 | .SH NAME
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| 3 | sort \- sort a file of ASCII lines
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| 4 | .SH SYNOPSIS
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| 5 | \fBsort\fR [\fB\-bcdf\&imnru\fR]\fR [\fB\-t\fIc\fR] [\fB\-o \fIname\fR] [\fB+\fIpos1\fR] [\fB\-\fIpos2\fR] \fIfile\fR ...\fR
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| 6 | .br
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| 7 | .de FL
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| 8 | .TP
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| 9 | \\fB\\$1\\fR
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| 10 | \\$2
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| 11 | ..
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| 12 | .de EX
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| 13 | .TP 20
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| 14 | \\fB\\$1\\fR
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| 15 | # \\$2
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| 16 | ..
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| 17 | .SH OPTIONS
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| 18 | .FL "\-b" "Skip leading blanks when making comparisons"
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| 19 | .FL "\-c" "Check to see if a file is sorted"
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| 20 | .FL "\-d" "Dictionary order: ignore punctuation"
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| 21 | .FL "\-f" "Fold upper case onto lower case"
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| 22 | .FL "\-i" "Ignore nonASCII characters"
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| 23 | .FL "\-m" "Merge presorted files"
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| 24 | .FL "\-n" "Numeric sort order"
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| 25 | .FL "\-o" "Next argument is output file"
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| 26 | .FL "\-r" "Reverse the sort order"
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| 27 | .FL "\-t" "Following character is field separator"
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| 28 | .FL "\-u" "Unique mode (delete duplicate lines)"
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| 29 | .SH EXAMPLES
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| 30 | .EX "sort \-nr file" "Sort keys numerically, reversed"
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| 31 | .EX "sort +2 \-4 file" "Sort using fields 2 and 3 as key"
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| 32 | .EX "sort +2 \-t: \-o out" "Field separator is \fI:\fP"
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| 33 | .EX "sort +.3 \-.6" "Characters 3 through 5 form the key"
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| 34 | .SH DESCRIPTION
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| 35 | .PP
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| 36 | .I Sort
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| 37 | sorts one or more files.
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| 38 | If no files are specified, \fIstdin\fR is sorted.
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| 39 | Output is written on standard output, unless \fB\-o\fP is specified.
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| 40 | The options \fB+\fIpos1 \fB\-\fIpos2\fR use only fields \fIpos1\fR
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| 41 | up to but not including \fIpos2\fR as the sort key, where a field is a
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| 42 | string of characters delimited by spaces and tabs, unless a different field
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| 43 | delimiter is specified with \fB\-t\fR.
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| 44 | Both \fIpos1\fR and \fIpos2\fR have the form \fIm.n\fR where \fIm\fR tells
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| 45 | the number of fields and \fIn\fR tells the number of characters.
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| 46 | Either \fIm\fR or \fIn\fR may be omitted.
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| 47 | .SH "SEE ALSO"
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| 48 | .BR comm (1),
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| 49 | .BR grep (1),
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| 50 | .BR uniq (1).
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