nl(1) DG/UX 4.30 nl(1)
NAME
nl - line numbering filter
SYNOPSIS
nl [-htype] [-btype] [-ftype] [-vstart#] [-iincr] [-p]
[-lnum] [-ssep] [-wwidth] [-nformat] [-ddelim] file
DESCRIPTION
Nl reads lines from the named file or the standard input if
no file is named and reproduces the lines on the standard
output. Lines are numbered on the left in accordance with
the command options in effect.
Nl views the text it reads in terms of logical pages. Line
numbering is reset at the start of each logical page. A
logical page consists of a header, a body, and a footer
section. Empty sections are valid. Different line
numbering options are independently available for header,
body, and footer (e.g., no numbering of header and footer
lines while numbering blank lines only in the body).
The start of logical page sections are signaled by input
lines containing only the following delimiter character(s):
Line contents Start of
\:\:\: Header
\:\: Body
\: Footer
Unless optioned otherwise, nl assumes the text being read is
in a single logical page body.
Command options may appear in any order and may be
intermingled with only one optional filename. The options
are:
-btype Specifies which logical page body lines are to be
numbered. Recognized types and their meaning are:
a number all lines
t number lines with printable text only
n no line numbering
pstringnumber only lines that contain the regular expression
specified in string.
Default type for logical page body is t (text
lines numbered).
-htype Same as -btype except for header. Default type
Licensed material--property of copyright holder(s) Page 1
nl(1) DG/UX 4.30 nl(1)
for logical page header is n (no lines numbered).
-ftype Same as -btype, but default for logical page
footer is n (no lines numbered).
-p Do not restart numbering at logical page
delimiters.
-vstart# Start# is the initial value used to number logical
page lines. Default is 1.
-iincr Incr is the increment value used to number logical
page lines. Default is 1.
-ssep Sep is the character(s) used in separating the
line number and the corresponding text line.
Default sep is a tab.
-wwidth Width is the number of characters to be used for
the line number. Default width is 6.
-nformat Format is the line numbering format. Recognized
values are:
ln left justified, leading zeroes suppressed;
rn right justified, leading zeroes supressed;
rz right justified, leading zeroes kept.
Default format is rn (right justified).
-lnum Num is the number of blank lines to be considered
as one line. For example, -l2 numbers only the
second adjacent blank (if the appropriate -ha,
-ba, and/or -fa option is set). Default is 1.
-dxx The delimiter characters specifying the start of a
logical page section may be changed from the
default characters (\:) to two user-specified
characters. If only one character is entered, the
second character remains the default character
(:). No space should appear between the -d and
the delimiter characters. To enter a backslash,
use two backslashes.
EXAMPLES
$ cat oldfile
Cari Goldsmith:
Mill Valley, CA
Bella Anderson:
Los Altos, CA
Licensed material--property of copyright holder(s) Page 2
nl(1) DG/UX 4.30 nl(1)
Susan Walton:
Cleveland, OH
$ nl -bp: oldfile >newfile
$ cat newfile
1Cari Goldsmith:
Mill Valley, CA
2Bella Anderson:
Los Altos, CA
3Susan Walton:
Cleveland, OH
$
This example inserts line numbers on all lines in the input
file that contain a colon.
SEE ALSO
pr(1).
Licensed material--property of copyright holder(s) Page 3