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asort(1)							      asort(1)

       asort  -	 Sorts	or merges files and supports multiple collating weight

       asort [-m] [-o output_file] [-Abdfinruv] [-Ccollate_sequence] [-k  key‐
       def]...	 [-t   character]   [-T	  directory]   [-y]   [kilobytes]  [-z
       record_size]... file...

       asort -c	 [-u] [-Abdfinruv]  [-Ccollate_sequence]  [-k  keydef]...  [-t
       character] [-T directory] [-y] [kilobytes] [-z record_size]...  file...

       The  following  syntax is maintained for backward compatibility but may
       be  withdrawn  in  a  future  release:  asort  [-Abcdfimnruv]   [-Ccol‐
       late_sequence]  [-o  output_file]  [-t  character]  [-T directory] [-y]
       [kilobytes]  [-z	 record_size]  [+fskip]	 [.cskip]  [-fskip]   [.cskip]
       [-bdfinr]... file...

       The  asort  command  includes the same options as the sort command (see
       sort(1)) in addition to the following options: Specifies the  collating
       weight sequence to be used in sorting the data files.  When this option
       is specified, the asort command does not use the collating  table  from
       the locale database.  Instead, the command uses a set of special system
       and user collating tables to determine the collating weights of charac‐
       ters, including user-defined characters (UDCs).

	      The  collate_sequence argument can be in long form (for example,
	      "Pinyin Radical Stroke") or short form (for example,  prs).  The
	      codeset  of  the	locale determines which collation weight names
	      can be specified for collate_sequence. The following list speci‐
	      fies  the	 long  and short collation weight names that are valid
	      for supported codesets.

	      For DEC Hanzi:

	      Pinyon (or p) Radical (or r) Stroke (or s) For DEC  Hanyu,  Tai‐
	      wanese EUC, and BIG-5:

	      Phonetic	(or  p)	 Radical  (or r) Stroke (or s) Uses a breadth-
	      first sorting mechanism instead of the default depth-first mech‐
	      anism to sort the input data.  To have any effect, the -v option
	      must be used together with the -C option.

       The asort command sorts lines in its input files and writes the	result
       to  standard output.  The asort command is similar to the sort command.
       See the sort(1) reference page for information about features  the  two
       commands have in common.

       The  asort command provides additional features for processing multiple
       collating weight sequences used with Asian languages, such as  Chinese.
       For  example,  pinyon (p), stroke (s), and radical (r) are three dimen‐
       sions along which characters can be ordered in Simplified Chinese.  The
       -C  option allows users to specify the priority level that these dimen‐
       sions have during sorting. For example, -C srp specifies	 that  charac‐
       ters should be sorted first by stroke, then by radical, then by pinyon.
       The specified sequence is applied to user-defined characters (UDCs)  as
       well as to standard characters.

       When the -C option is specified, the default behavior of the asort com‐
       mand is to use a depth-first sorting mechanism to sort the input files.
       With the depth-first mechanism, pairs of multibyte characters in a sort
       field are compared by exhausting all the	 specified  collating  weights
       and/or  internal	 codes	one  at	 a  time  until the collating order is
       resolved.  Only when two characters are identical is the next  pair  of
       characters  compared.  The depth-first sorting mechanism is also called
       character sorting.

       However, the asort command provides the -v option to use the Asian VMS-
       like  breadth-first  sorting  mechanism.	 With the breadth-first mecha‐
       nism, pairs of multibyte characters in a sort field are compared	 using
       the  first  collating  weight  for all the characters in the sort field
       first.  Only when two sets of data in a sort field are computed to have
       the  same  collating  order  are	 succeeding collating weights used for
       resolving the collating order.  The breadth-first sorting mechanism  is
       sometimes called string sorting.

       Currently,  the	asort  command	is supported for use only with Chinese

       The asort command returns the following exit values:  All  input	 files
       were  output  successfully,  or -c was specified and the input file was
       correctly sorted.  If -c was specified, the file	 was  not  ordered  as
       specified,  or  if the -c and -u options were both specified, two input
       lines were found with equal keys.  An error occurred.

       Unless stated otherwise, the following examples assume the locale  set‐
       ting  is	 zh_TW.dechanyu:  To perform character sorting first by stroke
       and then by radical, enter: asort -C"Stroke Radical" names

	      This command displays the lines in  names	 sorted	 in  ascending
	      order  according to the number of strokes in characters.	If the
	      number of strokes happen to be the same for two characters,  the
	      radicals	of  the	 characters  determine	how the characters are
	      ordered.An alternative short form of the same command is as fol‐
	      lows: asort -Csr names To perform string sorting first by stroke
	      and then by radical in a way similar to the sort command	avail‐
	      able  on an Asian VMS system, enter: asort -v -C"Stroke Radical"

       Commands: sort(1)

       Functions: setlocale(3)

       Files: locale(4)

       Others: Chinese(5), i18n_intro(5)


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