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Full Discussion: How to assign correct values to the multiple words?
Top Forums Shell Programming and Scripting How to assign correct values to the multiple words? Post 302984336 by RavinderSingh13 on Tuesday 25th of October 2016 12:13:57 AM
Old 10-25-2016
Quote:
Originally Posted by looney
Hi RudiC,
Kindly explain below part of code.
Code:
if ($1+0) sub ($1 FS, _)

I could understand that first we are checking if first field is number then substituting it and space with _. If it is so then why.?
Hello looney,

Could you please go thorugh following and let me know if this helps you.
Code:
if ($1+0)   sub ($1 FS, _)    #### In if condition it is mentioned $1+0, so by adding 0 to $1's value we are making sure it should take only 
                              #### integer values in first field and then subsitutue this first field value with space to 
                              #### NULL(you could take _ as a variable whose value is NULL). So first we are printing the value of $0 with printf 
                              #### the actual one, then we are editig the line as per OP's requirement so if you see OP doesn't want $1(first field)
                              #### in 2nd part of line where we are printing the exchanged values so this is why it is used here.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
looney
 

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LEARN ABOUT CENTOS

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.

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

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

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

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

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

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --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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