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Full Discussion: Help understanding a script
Top Forums Shell Programming and Scripting Help understanding a script Post 302358951 by vgersh99 on Monday 5th of October 2009 09:17:27 AM
Old 10-05-2009
Quote:
Originally Posted by Amit.Sagpariya
in awk version, ~ means equal to

here it says, if column4=PP and column5=SIZE or column4=FREE and column5=PPs then...
No, that's not correct.
'man nawk' yields:
Code:
     expr ~ expr       ERE match                  numeric            none
     expr !~ expr      ERE non-match               numeric           none
....

     A regular expression can be matched against a specific field
     or  string by using one of the two regular expression match-
     ing operators, ~ and !~.  These  operators  interpret  their
     right-hand  operand  as a regular expression and their left-
     hand operand as a string. If the regular expression  matches
     the  string,  the ~ expression evaluates to the value 1, and
     the !~ expression evaluates to the value 0. If  the  regular
     expression  does  not  match  the  string,  the ~ expression
     evaluates to the value 0, and the !~ expression evaluates to
     the  value  1.  If  the right-hand operand is any expression
     other than the lexical token ERE, the string  value  of  the
     expression is interpreted as an extended regular expression,
     including the escape  conventions  described  above.  Notice
     that  these  same escape conventions also are applied in the
     determining the value of a string literal (the lexical token
     STRING),  and is applied a second time when a string literal
     is used in this context.

 

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LEARN ABOUT DEBIAN

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.
	      Please notice this option isn't related to the terminal length as in a "80 culums terminal".

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do right to left (RTL) layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter and A4. Default is A4.

       Postscript points
	      Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch.

       --bottom-margin=bm
	      Set bottom margin. Default is 36 postscript points.

       --top-margin=tm
	      Set top margin. Default is 36 postscript points.

       --left-margin=lm
	      Set left margin. Default is 36 postscript points.

       --right-margin=rm
	      Set right margin. Default is 36 postscript points.

       --gutter-width=gw
	      Set gutter width. Default is 40 postscript points.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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