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Top Forums Shell Programming and Scripting Search and swap multiple lines in file using Perl Post 302689567 by veerabahu on Tuesday 21st of August 2012 04:30:21 PM
Old 08-21-2012
The output file wont work missing those lines mentioned.
These are the first 40 odd lines of my 1000 line vcd script file. I am looking for the changes (shown in bold & italics) for any number of occurrences of vector bits a[n],b[n] and sum[n] found anywhere else in the code.If someone can show me how these changes could be done---even for the first instance of occurrence shown here--- i think i can take it from there...

Thanks in advance



Code:
$date     
Mon Aug 20 12:40:08 2012 
$end 
$version     
version 9.5-hbe-sp-mm 
$end 
$timescale     
1ps 
$end

$scope module MAIN $end
$var  wire 1 e a[3] $end 
$var  wire 1 d a[2] $end 
$var  wire 1 c a[1] $end 
$var  wire 1 b a[0] $end 
$var  wire 1 i b[3] $end  
$var  wire 1 h b[2] $end  
$var  wire 1 g b[1] $end  
$var  wire 1 f b[0] $end  
$var wire 1 j cin $end  
$var wire 1 k cout $end  
$var wire 1 l gnd $end  
$var wire 1 m gnd! $end  
$var wire 1 n ground $end 
$var wire 1 r sum[3] $end 
$var wire 1 q sum[2] $end 
$var wire 1 p sum[1] $end 
$var wire 1 o sum[0] $end 
$var wire 1 s vdd $end  
$scope module x_adder $end 
....... 
.... 
#any such occurrences anywhere in the script

Note: Thanks Alister.It was useful neverthless.
 

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lrange(n)						       Tcl Built-In Commands							 lrange(n)

__________________________________________________________________________________________________________________________________________________

NAME
lrange - Return one or more adjacent elements from a list SYNOPSIS
lrange list first last _________________________________________________________________ DESCRIPTION
List must be a valid Tcl list. This command will return a new list consisting of elements first through last, inclusive. The index values | first and last are interpreted the same as index values for the command string index, supporting simple index arithmetic and indices rela- | tive to the end of the list. If first is less than zero, it is treated as if it were zero. If last is greater than or equal to the number of elements in the list, then it is treated as if it were end. If first is greater than last then an empty string is returned. Note: "lrange list first first" does not always produce the same result as "lindex list first" (although it often does for simple fields that are not enclosed in braces); it does, however, produce exactly the same results as "list [lindex list first]" EXAMPLES
Selecting the first two elements: % lrange {a b c d e} 0 1 a b Selecting the last three elements: % lrange {a b c d e} end-2 end c d e Selecting everything except the first and last element: % lrange {a b c d e} 1 end-1 b c d Selecting a single element with lrange is not the same as doing so with lindex: % set var {some {elements to} select} some {elements to} select % lindex $var 1 elements to % lrange $var 1 1 {elements to} SEE ALSO
list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), lset(n), lreplace(n), lsort(n), string(n) | KEYWORDS
element, list, range, sublist Tcl 7.4 lrange(n)
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