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Full Discussion: Variable usage issue
Top Forums UNIX for Dummies Questions & Answers Variable usage issue Post 302843015 by Prem148 on Sunday 11th of August 2013 04:27:30 PM
Old 08-11-2013
Variable usage issue
Hi,

I need a help in setting scope of the variable. I want to use the below logic right before the "break" statement
Code:
if [ ${trailer} -eq $eof ]; then
echo $header
echo $trailer
fi

But due the scope of the variable it is causing issues. I tried using "export" statement. But it changes the output completely
Code:
#!/bin/sh
file="drop/test1"
filename="2154/drop/abc.emi"
eof=`wc -l $filename | awk '{print $1;}'`
blk_val=99999
while read j
do
prev=$j
prev1=$j
blk_flag=0
loop_count=0
blk_size=0
while read j
do
 if [ ${j} -gt ${prev} ]; then
 next=$j
 blk_size=`expr $next - $prev + $blk_size + 1 `
	 if [ ${blk_size} -ge ${blk_val} ]; then
		 if [ ${blk_flag} -eq 1 ]; then
			    if [ ${loop_count} -eq 0 ]; then
				 header=$prev1
				 trailer=$next
				 prev=`expr $next + 1`
				 echo h0=$header
				 echo t0=$trailer
				 blk_size=0
				 blk_flag=0
				 loop_count=1
				 prev1=`expr $trailer + 1`
			    else 
				 prev1=`expr $trailer + 1`
				 trailer=$next
				 prev=`expr $next + 1`
				 header=$prev1
				 echo h1=$header
				 echo t1=$trailer
				 blk_size=0
				 blk_flag=0
			    fi	 
		 else 
			 header=$prev
			 trailer=$next
			 prev=`expr $next + 1`
			 blk_size=0
			 blk_flag=0
			 echo h2=$header
			 echo t2=$trailer 	        
		 fi	 
	 else
		 prev=`expr $next + 1`
		 blk_flag=1
	 fi	

 fi
done < $file      
break
done < $file

I/P file is a big file like:
Code:
1
6
7
14
15
20
21
96
97
115
.
.
.
1322610
1322620
1322621
1322654
1322655
1322657
1322658
1322661
1322662
1322664

Current O/p:
Code:
h0=1
t0=100008
h1=100009
t1=201120
h1=201121
t1=301524
h1=301525
t1=401938
h1=401939
t1=503160
h1=503161
t1=604185
h1=604186
t1=704649
h1=704650
t1=806089
h1=806090
t1=909204
h1=909205
t1=1009463
h1=1009464
t1=1109665
h1=1109666
t1=1210242
h1=1210243
t1=1311035


Expected O/P:
h0=1
t0=100008
h1=100009
t1=201120
h1=201121
t1=301524
h1=301525
t1=401938
h1=401939
t1=503160
h1=503161
t1=604185
h1=604186
t1=704649
h1=704650
t1=806089
h1=806090
t1=909204
h1=909205
t1=1009463
h1=1009464
t1=1109665
h1=1109666
t1=1210242
h1=1210243
t1=1311035
h1=1311036
t1=1322664

Can someone help
Last edited by Scott; 08-11-2013 at 07:07 PM.. Reason: Returning banned user - Thread closed.
 

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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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