Find a string across line break (because of "segmentation fault core dumped") Post: 302926332

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Top Forums UNIX for Dummies Questions & Answers Find a string across line break (because of "segmentation fault core dumped") Post 302926332 by thewizarde6 on Sunday 23rd of November 2014 12:29:33 PM

11-23-2014

Registered User

Find a string across line break (because of "segmentation fault core dumped")

Hi,
thanks to a precedent post, and thanks to the reply of derekludwig of the forum, I have convert my first awk command as :

test.txt is : AAAAAGHIJKLAjKMEFJKLjklABCDJkLEFGHIJKL

Code:

awk -f findstring.awk test.txt > textreturn.txt

findstring.awk is :

Code:

BEGIN{ SLENGTH = 3 }
{
    
    skipped = 0
    starts = ""
 line   = tolower($0)
    while ( SSTART = index(line,string )) {
        starts = starts (starts?" ":"") (skipped + SSTART)
        line = substr(line,SSTART + SLENGTH)
        skipped += (SSTART + SLENGTH - 1)
    }
}
starts { print starts }

to find all "JKL" regular expression anyway the type of case. It returns 9 18 21 28 36.

Now, I would like to know if it is possible to find this string across different lines and obtain the first result, for example with test.txt like this :

AAAAAGHI
JKLAjKMEFJK
LjklABCDJkLEFGHIJKL

I have tried to transform input file as a unique line with this command :

Code:

awk -vRS="" ' {gsub("\n","",$0) ; print ""$0""} test.txt > test2.txt

But my file is so heavy that I receive this error :

Code:

segmentation fault (core dumped)

I have also tried this one :

Code:

cat test.txt | xargs |sed -e 's/ //g' > test2.txt

and it seems to be works (no messages).

But, by exploring the result file for one heavy file, not all lines are in one line; there is just less number of lines.

Thanks for your help,
Bye.

thewizarde6

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LEARN ABOUT OPENSOLARIS

break

break(1T)						       Tcl Built-In Commands							 break(1T)

__________________________________________________________________________________________________________________________________________________

NAME

       break - Abort looping command

SYNOPSIS

       break
_________________________________________________________________

DESCRIPTION

       This command is typically invoked inside the body of a looping command such as for or foreach or while.	It returns a TCL_BREAK code, which
       causes a break exception to occur.  The exception causes the current script to be aborted out to the  innermost	containing  loop  command,
       which  then aborts its execution and returns normally.  Break exceptions are also handled in a few other situations, such as the catch com-
       mand, Tk event bindings, and the outermost scripts of procedure bodies.

EXAMPLE

       Print a line for each of the integers from 0 to 5:
	      for {set x 0} {$x<10} {incr x} {
		 if {$x > 5} {
		    break
		 }
		 puts "x is $x"
	      }

SEE ALSO

       catch(1T), continue(1T), for(1T), foreach(1T), return(1T), while(1T)

KEYWORDS

       abort, break, loop

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTcl	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES

       Source for Tcl is available on http://opensolaris.org.

Tcl																	 break(1T)

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LEARN ABOUT OPENSOLARIS

break