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Full Discussion: Parsing of file for Report Generation (String parsing and splitting)
Top Forums Shell Programming and Scripting Parsing of file for Report Generation (String parsing and splitting) Post 302292401 by adderek on Friday 27th of February 2009 06:06:17 PM
Old 02-27-2009
Quote:
Originally Posted by cfajohnson

There is no reason either should happen. The variable length is limited only by available memory.
I have experienced variable size problems on some environments. Not sure what were the conditions though.

The is not the way to read a file. It sets var to each word in the file, not each line.
Depends on the shell/system/environment. Cannot give you details out from my head but it could be "inteligent" and read word${IFS}by${IFS}word or line by line.


There is no need to play with IFS to read a file line by line.
Might be needed if you choose the way mentioned above.
 

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LEARN ABOUT BSD

man

MAN(7)							 Miscellaneous Information Manual						    MAN(7)

NAME

       man - macros to typeset manual

SYNOPSIS

       nroff  -man  file ...

       troff  -man  file ...

DESCRIPTION

       These macros are used to lay out pages of this manual.  A skeleton page may be found in the file /usr/man/man.template.

       Any  text  argument  t may be zero to six words.  Quotes may be used to include blanks in a `word'.  If text is empty, special treatment is
       applied to the next input line with text to be printed.	In this way .I may be used to italicize a whole line, or .SM may be followed by .B
       to make small bold letters.

       A  prevailing  indent  distance	is  remembered	between successive indented paragraphs, and is reset to default value upon reaching a non-
       indented paragraph.  Default units for indents i are ens.

       Type font and size are reset to default values before each paragraph, and after processing font and size setting macros.

       These strings are predefined by -man:

       *R    `(Reg)', trademark symbol in troff.

       *S    Change to default type size.

FILES

       /usr/share/tmac/tmac.an
       /usr/man/man.template

SEE ALSO

       troff(1), man(1)

BUGS

       Relative indents don't nest.

REQUESTS

			    Request	 Cause If no	Explanation		 Break Argument .B t	     no    t=n.t.l.*Text t is  bold.   .BI
			    t	     no    t=n.t.l. Join  words  of  t	alternating  bold and italic.  .BR t	    no	  t=n.t.l. Join words of t
			    alternating bold and Roman.  .DT	      no    .5i 1i...Restore default tabs.  .HP  i	  yes	i=p.i.*  Set  pre-
			    vailing  indent  to  i.   Begin  paragraph	with  hanging  indent.	.I t	     no    t=n.t.l. Text t is italic.  .IB
			    t	     no    t=n.t.l. Join words of t alternating italic and bold.  .IP x i      yes   x=""     Same as .TP with tag
			    x.	 .IR  t        no    t=n.t.l. Join  words  of t alternating italic and Roman.  .LP	    yes   -	   Same as
			    .PP.  .PD d        no    d=.4v    Interparagraph distance is  d.   .PP	    yes   -	   Begin  paragraph.   Set
			    prevailing	indent	to  .5i.   .RE		yes   -        End of relative indent.	Set prevailing indent to amount of
			    starting   .RS.    .RB   t	      no    t=n.t.l. Join   words   of	 t    alternating    Roman    and    bold.     .RI
			    t	     no    t=n.t.l. Join  words  of  t	alternating  Roman and italic.	.RS i	     yes   i=p.i.   Start relative
			    indent,  move  left  margin  in  distance  i.    Set   prevailing	indent	 to   .5i   for   nested   indents.    .SH
			    t	     yes   t=n.t.l. Subhead.   .SM  t	     no    t=n.t.l. Text  t  is small.	.TH n c x v m	   yes	    -Begin
			    page named n of chapter c; x is extra commentary, e.g. `local', for page foot center; v alters page  foot  left,  e.g.
			    `4th Berkeley Distribution'; m alters page head center, e.g. `Brand X Programmer's Manual'.  Set prevailing indent and
			    tabs to .5i.  .TP i        yes   i=p.i.   Set prevailing indent to i.  Begin indented paragraph with hanging tag given
			    by next text line.	If tag doesn't fit, place it on separate line.

       * n.t.l. = next text line; p.i. = prevailing indent

7th Edition							 October 22, 1996							    MAN(7)
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