generating line numbers


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Top Forums Shell Programming and Scripting generating line numbers
# 8  
Quote:
Originally Posted by sam4now
any other way without the sed and awk plssss
Why? This isn't homework, is it?

Code:
nl file |
while read no line; do
  echo "$no)" "$line"
done

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NL(1)								   User Commands							     NL(1)

NAME
nl - number lines of files SYNOPSIS
nl [OPTION]... [FILE]... DESCRIPTION
Write each FILE to standard output, with line numbers added. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -b, --body-numbering=STYLE use STYLE for numbering body lines -d, --section-delimiter=CC use CC for separating logical pages -f, --footer-numbering=STYLE use STYLE for numbering footer lines -h, --header-numbering=STYLE use STYLE for numbering header lines -i, --line-increment=NUMBER line number increment at each line -l, --join-blank-lines=NUMBER group of NUMBER empty lines counted as one -n, --number-format=FORMAT insert line numbers according to FORMAT -p, --no-renumber do not reset line numbers at logical pages -s, --number-separator=STRING add STRING after (possible) line number -v, --starting-line-number=NUMBER first line number on each logical page -w, --number-width=NUMBER use NUMBER columns for line numbers --help display this help and exit --version output version information and exit By default, selects -v1 -i1 -l1 -sTAB -w6 -nrn -hn -bt -fn. CC are two delimiter characters for separating logical pages, a missing second character implies :. Type \ for . STYLE is one of: a number all lines t number only nonempty lines n number no lines pBRE number only lines that contain a match for the basic regular expression, BRE FORMAT is one of: ln left justified, no leading zeros rn right justified, no leading zeros rz right justified, leading zeros GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report nl translation bugs to <http://translationproject.org/team/> AUTHOR
Written by Scott Bartram and David MacKenzie. COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for nl is maintained as a Texinfo manual. If the info and nl programs are properly installed at your site, the com- mand info coreutils 'nl invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 NL(1)

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