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Full Discussion: awk, What's NF and NR ?
Top Forums Shell Programming and Scripting awk, What's NF and NR ? Post 302350757 by cola on Saturday 5th of September 2009 04:46:47 AM
Old 09-05-2009
awk, What's NF and NR ?

Code:
awk '{print ; if (NF != 0) print ""}' infile > outfile
awk 'END {print NR}' infile

What does it mean by NF,NR?
Are those built-in variables?
 

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mdbFontEncoding(5)						 The m17n Library						mdbFontEncoding(5)

NAME
mdbFontEncoding - Font Encoding DESCRIPTION
The m17n library loads information about the encoding of each font form the m17n database by the tags <font, encoding>. The data is loaded as a plist of this format. FONT-ENCODING ::= PER-FONT * PER-FONT ::= '(' FONT-SPEC ENCODING [ REPERTORY ] ')' FONT-SPEC ::= '(' [ FOUNDRY FAMILY [ WEIGHT [ STYLE [ STRETCH [ ADSTYLE ]]]]] REGISTRY ')' ENCODING ::= SYMBOL FONT-SPEC is to specify properties of a font. FOUNDRY to REGISTRY are symbols corresponding to Mfoundry to Mregistry property of a font. See m17nFont for the meaning of each property. For instance, this FONT-SPEC: (nil alice0 lao iso8859-1) should be applied to all fonts whose family name is 'alice0 lao', and registry is 'iso8859-1'. ENCODING is a symbol representing a charset. A font matching FONT-SPEC supports all characters of the charset, and a character code is mapped to the corresponding glyph code of the font by this charset. REPERTORY is a symbol representing a charset or 'nil'. Omitting it is the same as specifying ENCODING as REPERTORY. If it is not 'nil', the charset specifies the repertory of the font, i.e, which character it supports. Otherwise, whether a specific character is supported by the font or not is asked to each font driver. For so called Unicode fonts (registry is 'iso10646-1'), it is recommended to specify 'nil' as REPERTORY because such fonts usually supports only a subset of Unicode characters. COPYRIGHT
Copyright (C) 2001 Information-technology Promotion Agency (IPA) Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST) Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License <http://www.gnu.org/licenses/fdl.html>. Version 1.6.2 12 Jan 2011 mdbFontEncoding(5)

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