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Diff for /src/usr.bin/sort/sort.1 between version 1.22 and 1.23

version 1.22, 2005/09/27 23:40:07 version 1.23, 2005/09/28 10:10:16
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 .Nd sort or merge text files  .Nd sort or merge text files
 .Sh SYNOPSIS  .Sh SYNOPSIS
 .Nm sort  .Nm sort
 .Op Fl cmubdfinrzH  .Op Fl bcdfHimnruz
 .Op Fl t Ar char  
 .Op Fl R Ar char  
 .Oo  .Oo
 .Fl k Ar field1[,field2]  .Sm off
 .Oc  .Fl k
   .Ar field1 Op , Ar field2
 .Ar ...  .Ar ...
 .Op Fl T Ar dir  .Sm on
   .Oc
 .Op Fl o Ar output  .Op Fl o Ar output
 .Op Ar file  .Op Fl R Ar char
 .Ar ...  .Bk -words
   .Op Fl T Ar dir
   .Ek
   .Op Fl t Ar char
   .Op Ar file ...
 .Sh DESCRIPTION  .Sh DESCRIPTION
 The  The
 .Nm  .Nm
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 .It Fl f  .It Fl f
 Considers all lowercase characters that have uppercase  Considers all lowercase characters that have uppercase
 equivalents to be the same for purposes of comparison.  equivalents to be the same for purposes of comparison.
   .It Fl H
   Use a merge sort instead of a radix sort.
   This option should be used for files larger than 60Mb.
 .It Fl i  .It Fl i
 Ignore all non-printable characters.  Ignore all non-printable characters.
 .It Fl n  .It Fl n
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 option.)  option.)
 .It Fl r  .It Fl r
 Reverse the sense of comparisons.  Reverse the sense of comparisons.
 .It Fl H  
 Use a merge sort instead of a radix sort.  
 This option should be used for files larger than 60Mb.  
 .El  .El
 .Pp  .Pp
 The treatment of field separators can be altered using these options:  The treatment of field separators can be altered using these options:
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 Note that the  Note that the
 .Fl b  .Fl b
 option has no effect unless key fields are specified.  option has no effect unless key fields are specified.
   .It Xo
   .Sm off
   .Fl k\ \& Ar field1 Op , Ar field2
   .Sm on
   .Xc
   Designates the starting position,
   .Ar field1 ,
   and optional ending position,
   .Ar field2 ,
   of a key field.
   The
   .Fl k
   option replaces the obsolescent options
   .Cm \(pl Ns Ar pos1
   and
   .Fl Ns Ar pos2 .
   .It Fl R Ar char
   .Ar char
   is used as the record separator character.
   This should be used with discretion;
   .Fl R Aq Ar alphanumeric
   usually produces undesirable results.
   The default record separator is newline.
 .It Fl t Ar char  .It Fl t Ar char
 .Ar char  .Ar char
 is used as the field separator character.  is used as the field separator character.
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 delimit an empty field; further, the initial blank space  delimit an empty field; further, the initial blank space
 .Em is  .Em is
 considered part of a field when determining key offsets.  considered part of a field when determining key offsets.
 .It Fl R Ar char  
 .Ar char  
 is used as the record separator character.  
 This should be used with discretion;  
 .Fl R Ar <alphanumeric>  
 usually produces undesirable results.  
 The default record separator is newline.  
 .It Fl k Ar field1[,field2]  
 Designates the starting position,  
 .Ar field1 ,  
 and optional ending position,  
 .Ar field2 ,  
 of a key field.  
 The  
 .Fl k  
 option replaces the obsolescent options  
 .Cm \(pl Ns Ar pos1  
 and  
 .Fl Ns Ar pos2 .  
 .It Fl z  .It Fl z
 Uses the nul character as the record separator.  Uses the nul character as the record separator.
 .El  .El
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 considered to be part of the first field.  considered to be part of the first field.
 .Pp  .Pp
 Fields are specified by the  Fields are specified by the
 .Fl k Ar field1[,field2]  .Sm off
   .Fl k\ \& Ar field1 Op , Ar field2
   .Sm on
 argument.  argument.
 A missing  A missing
 .Ar field2  .Ar field2
Legend:
Removed from v.1.22  
changed lines
  Added in v.1.23