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<?xml version="1.0"?>
<command-def xmlns="http://www.unix4j.org/command-def"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.unix4j.org/command-def command-def.xsd">
<command name="sort" class="org.unix4j.unix.Sort" package="org.unix4j.unix.sort"/>
<name>
sort - sort, merge, or sequence check text files
</name>
<synopsis>
ORIGINAL: sort [-m][-o output][-bdfinru][-t char][-k keydef]... [file...]
sort -c [-bdfinru][-t char][-k keydef][file]
CURRENT: sort [-MVbdfghnru | comparator][file...]
sortMerge [-MVbdfghnru | comparator][file...]
sortCheck [-MVbdfghnru | comparator][file...]
</synopsis>
<description ref="sort.html"/>
<notes>
<note>
A <newline> is added to the end of an input line if it is not
properly terminated with a line ending (usually the last line in a file)
</note>
<!-- TODO implement sort options and remove the following notes -->
<note>The following sort order options are currently not supported: {@code dictionaryOrder}, {@code humanNumericSort}, {@code monthSort}, {@code versionSort}</note>
</notes>
<methods>
<method args="" usesStandardInput="true">
Sort the lines read from the standard input and writes the result to
the standard output.
Comparisons are based on the entire line without line ending. The
collating sequence of the current locale is used to perform the
comparisons.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort.
</method>
<method args="args" usesStandardInput="false">
Sort the lines of all the specified files together and writes the
result to the standard output.
Options can be specified by acronym (with a leading dash "-") or by
long name (with two leading dashes "--"). Operands other than the
default "--paths" operand have to be prefixed with the operand
name.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="files" usesStandardInput="false">
Sort the lines of all the specified files together and writes the
result to the standard output.
Comparisons are based on the entire line without line ending. The
collating sequence of the current locale is used to perform the
comparisons.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="comparator" usesStandardInput="true">
Sort the lines read from the standard input and writes the result to
the standard output.
Line comparisons are based on the specified {@code comparator}.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort.
</method>
<method args="comparator,files" usesStandardInput="false">
Sort the lines of all the specified files together and writes the
result to the standard output.
Line comparisons are based on the specified {@code comparator}.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="comparator,paths" usesStandardInput="false">
Sort the lines of all the specified files together and writes the
result to the standard output.
Line comparisons are based on the specified {@code comparator}.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="options" usesStandardInput="true">
Sorts, merges, or sequence checks the lines read from the standard
input and writes the result to the standard output.
Comparisons are based on the entire line without line ending. The
collating sequence of the current locale is used to perform the
comparisons.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort.
</method>
<method args="options,files" usesStandardInput="false">
Sorts, merges, or sequence checks the lines the lines of all the
specified files together and writes the result to the standard
output.
Comparisons are based on the entire line without line ending. The
collating sequence of the current locale is used to perform the
comparisons.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="options,paths" usesStandardInput="false">
Sorts, merges, or sequence checks the lines the lines of all the
specified files together and writes the result to the standard
output.
Comparisons are based on the entire line without line ending. The
collating sequence of the current locale is used to perform the
comparisons.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="options,comparator" usesStandardInput="true">
Sorts, merges, or sequence checks the lines read from the standard
input and writes the result to the standard output.
Line comparisons are based on the specified {@code comparator}.
All comparison related options are ignored except for
{@code --reverse}.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort.
</method>
<method args="options,comparator,files" usesStandardInput="false">
Sorts, merges, or sequence checks the lines the lines of all the
specified files together and writes the result to the standard
output.
Line comparisons are based on the specified {@code comparator}.
All comparison related options except for {@code --reverse} are
ignored.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
<method args="options,comparator,paths" usesStandardInput="false">
Sorts, merges, or sequence checks the lines the lines of all the
specified files together and writes the result to the standard
output.
Line comparisons are based on the specified {@code comparator}.
All comparison related options except for {@code --reverse} are
ignored.
The sort algorithm used is guaranteed to be stable: lines considered
equal will not be reordered as a result of the sort. If two lines
originate from different input files, the index of the file in the
input arguments list defines the ordering of the lines.
</method>
</methods>
<options>
sort [-m][-o output][-bdfinru][-t char][-k keydef]... [file...]
sort -c [-bdfinru][-t char][-k keydef][file]
<option name="check" acronym="c" exclusiveGroup="mc">
Checks that the single input file is ordered as specified by the
arguments and the collating sequence of the current locale. No
output is produced; only the exit code is affected.
</option>
<option name="merge" acronym="m" exclusiveGroup="mc">
Merge only; the input file are assumed to be already sorted.
</option>
<option name="unique" acronym="u">
Unique: suppress all but one in each set of lines having equal keys.
If used with the {@code -c} option, checks that there are no lines
with duplicate keys, in addition to checking that the input file is
sorted.
</option>
<option name="ignoreLeadingBlanks" acronym="b">
Ignore leading blanks.
(This option is ignored if a comparator operand is present).
</option>
<option name="dictionaryOrder" acronym="d">
Consider only blanks and alphanumeric characters.
(This option is ignored if a comparator operand is present).
</option>
<option name="ignoreCase" acronym="f">
Consider all lowercase characters that have uppercase equivalents to
be the uppercase equivalent for the purposes of comparison.
(This option is ignored if a comparator operand is present).
</option>
<option name="numericSort" acronym="n" exclusiveGroup="nghVM">
Sort numerically; the number begins each line and consists of
optional blanks, an optional minus sign, and zero or more digits
possibly separated by thousands separators, optionally followed by a
decimal-point character and zero or more digits. An empty number is
treated as '0'. The current local specifies the decimal-point
character and thousands separator.
Comparison is exact; there is no rounding error.
Neither a leading '+' nor exponential notation is recognized. To
compare such strings numerically, use the
{@code -genericNumericSort (-g)} option.
(This option is ignored if a comparator operand is present).
</option>
<option name="generalNumericSort" acronym="g" exclusiveGroup="nghVM">
Sort numerically, using the standard {@link Double#parseDouble(String)}
function to convert a trimmed line to a double-precision floating
point number. This allows floating point numbers to be specified in
scientific notation, like 1.0e-34 and 10e100.
Uses the following collating sequence: Lines that cannot be parsed
because they do not represent valid double values (in alpha-numeric
order); "-Infinity"; finite numbers in ascending numeric order
(with -0 < +0); "Infinity"; "NaN".
This option is usually slower than {@code -numeric-sort (-n)} and it
can lose information when converting to floating point.
(This option is ignored if a comparator operand is present).
</option>
<option name="humanNumericSort" acronym='h' exclusiveGroup="nghVM">
Sort numerically, first by numeric sign (negative, zero, or
positive); then by SI suffix (either empty, or 'k' or 'K', or one
of 'MGTPEZY', in that order); and finally by numeric value. For
example, '1023M' sorts before '1G' because 'M' (mega) precedes 'G'
(giga) as an SI suffix.
This option sorts values that are consistently scaled to the nearest
suffix, regardless of whether suffixes denote powers of 1000 or
1024, and it therefore sorts the output of any single invocation of
the {@code ls} command that are invoked with the --human-readable
option.
The syntax for numbers is the same as for the
{@code --numericSort (-n)} option; the SI suffix must immediately
follow the number.
(This option is ignored if a comparator operand is present).
</option>
<option name="monthSort" acronym="M" exclusiveGroup="nghVM">
An initial string, consisting of any amount of blanks, followed by a
month name abbreviation, is folded to UPPER case and compared in the
order: (unknown) < 'JAN' < ... < 'DEC'. The current locale
determines the month spellings.
</option>
<option name="versionSort" acronym="V" exclusiveGroup="nghVM">
Sort by version name and number. It behaves like a standard sort,
except that each sequence of decimal digits is treated numerically
as an index/version number.
(This option is ignored if a comparator operand is present).
</option>
<option name="reverse" acronym="r">
Reverse the sense of comparisons.
</option>
</options>
<operands default="paths">
<operand name="paths" type="String...">
Pathnames of the files to be sorted, merged, or checked; wildcards *
and ? are supported; relative paths are resolved on the
basis of the current working directory.
</operand>
<operand name="files" type="java.io.File...">
The files to be sorted or merged; relative paths are not resolved
(use the string paths argument to enable relative path resolving
based on the current working directory).
</operand>
<operand name="comparator" type="java.util.Comparator<? super org.unix4j.line.Line>">
The comparator to use for the line comparisons.
</operand>
<!--
<operand name="keydef" type="Keydef">
The files to be sorted or merged.
</operand>
-->
<!--
<operand name="separatorChars" type="String">
Use {@code separatorChars} as the field separator;
{@code separatorChars} is not considered to be part of a field
(although it can be included in a sort key). Each occurrence of
{@code separatorChars} is significant (for example, two consecutive
{@code separatorChars} delimit an empty field). If not specified,
whilespace characters (tabs, spaces) are used as default field
separators; each maximal non-empty sequence of whitespace chars that
follows a non-whitespace char is a field separator.
</operand>
<operand name="fieldStart" type="int">
Define a key field that begins at {@code fieldStart} and ends at
{@code fieldEnd} inclusive, unless {@code fieldStart} falls beyond
the end of the line or after {@code fieldEnd}, in which case the key
field is empty.
A field comprises a maximal sequence of non-separating characters
and, in the absence of a {@code separatorChar}, any preceding field
separator.
</operand>
<operand name="fieldEnd" type="int">
Define a key field that begins at {@code fieldStart} and ends at
{@code fieldEnd} inclusive, unless {@code fieldStart} falls beyond
the end of the line or after {@code fieldEnd}, in which case the key
field is empty. A missing {@code fieldEnd} means the last character
of the line.
A field comprises a maximal sequence of non-separating characters
and, in the absence of a {@code separatorChar}, any preceding field
separator.
</operand>
<operand name="fieldType" type="FieldType">
A modifier similar to the options 'b', 'd', 'f', 'i', 'n', 'r'
defined for sort, but applies only to the key field to which they
are attached.
</operand>
<operand name="keydef" type="Keydef">
The keydef argument is a restricted sort key field definition. When
there are multiple key fields, later keys are compared only after
all earlier keys compare equal. Except when the -u option is
specified, lines that otherwise compare equal are ordered as if none
of the options -d, -f, -i, -n, or -k were present (but with -r still
in effect, if it was specified) and with all bytes in the lines
significant to the comparison. The order in which lines that still
compare equal are written is unspecified.
</operand>
-->
<operand name="args" type="String...">
String arguments defining the options and operands for the command.
Options can be specified by acronym (with a leading dash "-") or by
long name (with two leading dashes "--"). Operands other than the
default "--paths" operand have to be prefixed with the operand
name (e.g. "--comparator" for a subsequent comparator operand value).
</operand>
<operand name="options" type="SortOptions">
The options for the sort command.
</operand>
</operands>
</command-def>
