sbase/sort.1

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.Dd January 30, 2015
.Dt SORT 1
.Os sbase
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.Sh NAME
.Nm sort
.Nd sort lines
.Sh SYNOPSIS
.Nm
.Op Fl bnru
.Op Fl t Ar delim
.Op Fl k Ar key ...
.Op Ar file ...
.Sh DESCRIPTION
.Nm
writes the sorted concatenation of the given files to stdout. If no file is
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given, sort reads from stdin.
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.Sh OPTIONS
.Bl -tag -width Ds
.It Fl C
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check that the concatenation of the given files is sorted rather than sorting
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them. In this mode, no output is printed to stdout, and the exit status
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indicates the result of the check.
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.It Fl b
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skip leading whitespace of columns when sorting.
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.It Fl c
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the same as
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.Fl C
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except that when disorder is detected, a message is printed to stderr
indicating the location of the disorder.
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.It Fl k Ar key
specifies a key definition of the form
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.Sm off
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.Sy S
.No [.
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.Sy s
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.No ][
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.Sy f
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.No ][,
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.Sy E
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.No [.
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.Sy e
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.No ][
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.Sy f
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.No ]]
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.Sm on
where
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.Sm off
.Sy S
,
.Sy s
,
.Sy E
.Sm on
and
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.Sy e
are the starting column, starting character in that column, ending column and
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the ending character of that column respectively. If they are not specified,
.Sy s
refers to the first character of the specified starting column,
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.Sy E
refers to the last column of every line, and
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.Sy e
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refers to the last character of the ending column.
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.Sy f
can be used to specify options
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.Sm off
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(
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.Sy n
,
.Sy b
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)
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.Sm on
that only apply to this key definition.
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.Sy b
is special in that it only applies to the column that it was specified after.
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.It Fl n
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perform a numeric sort.
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.It Fl r
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reverses the sort.
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.It Fl t Ar delim
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specifies the field delimiter.
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.It Fl u
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prints equal lines only once.
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.El