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Improve markup and do some minor wordsmithing.

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This commit is contained in:
Ruslan Ermilov 2006-12-21 10:59:48 +00:00
parent 4b4ee018fa
commit dce95037f4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=165436
1 changed files with 26 additions and 16 deletions
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42
usr.bin/join/join.1
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@ -51,8 +51,8 @@
.Bk -words
.Ek
.Op Fl t Ar char
.Op Fl \&1 Ar field
.Op Fl \&2 Ar field
.Op Fl 1 Ar field
.Op Fl 2 Ar field
.Ar file1
.Ar file2
.Sh DESCRIPTION
@ -100,8 +100,8 @@ option specifies the fields that will be output from each file for
each line with matching join fields.
Each element of
.Ar list
has the either the form
.Ql file_number.field ,
has either the form
.Ar file_number . Ns Ar field ,
where
.Ar file_number
is a file number and
@ -129,18 +129,20 @@ Do not display the default output, but display a line for each unpairable
line in file
.Ar file_number .
The options
.Fl v Ar 1
.Fl v Cm 1
and
.Fl v Ar 2
.Fl v Cm 2
may be specified at the same time.
.It Fl 1 Ar field
Join on the
.Ar field Ns 'th
field of file 1.
field of
.Ar file1 .
.It Fl 2 Ar field
Join on the
.Ar field Ns 'th
field of file 2.
field of
.Ar file2 .
.El
.Pp
When the default field delimiter characters are used, the files to be joined
@ -164,7 +166,7 @@ If one of the arguments
or
.Ar file2
is
.Dq - ,
.Sq Fl ,
the standard input is used.
.Sh EXIT STATUS
.Ex -std
@ -175,19 +177,27 @@ the following options are available:
.Bl -tag -width indent
.It Fl a
In addition to the default output, produce a line for each unpairable line
in both file 1 and file 2.
in both
.Ar file1
and
.Ar file2 .
.It Fl j1 Ar field
Join on the
.Ar field Ns 'th
field of file 1.
field of
.Ar file1 .
.It Fl j2 Ar field
Join on the
.Ar field Ns 'th
field of file 2.
field of
.Ar file2 .
.It Fl j Ar field
Join on the
.Ar field Ns 'th
field of both file 1 and file 2.
field of both
.Ar file1
and
.Ar file2 .
.It Fl o Ar list ...
Historical implementations of
.Nm
@ -195,16 +205,16 @@ permitted multiple arguments to the
.Fl o
option.
These arguments were of the form
.Ql file_number.field_number
.Ar file_number . Ns Ar field_number
as described
for the current
.Fl o
option.
This has obvious difficulties in the presence of files named
.Ql 1.2 .
.Pa 1.2 .
.El
.Pp
These options are available only so historic shellscripts do not require
These options are available only so historic shell scripts do not require
modification and should not be used.
.Sh SEE ALSO
.Xr awk 1 ,