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Full Discussion: Find a string across line break (because of "segmentation fault core dumped")
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
Old 11-23-2014
Hammer & Screwdriver 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.
 

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LEARN ABOUT LINUX

irsend

IRSEND(1)							   User Commands							 IRSEND(1)

NAME

       irsend - basic LIRC program to send infra-red commands

SYNOPSIS

       irsend [options] DIRECTIVE REMOTE CODE [CODE...]

DESCRIPTION

       Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
       as TV boxes, HiFi sets, etc.

       DIRECTIVE can be:
	  SEND_ONCE	    - send CODE [CODE ...] once
	  SEND_START	    - start repeating CODE
	  SEND_STOP	    - stop repeating CODE
	  LIST		    - list configured remote items
	  SET_TRANSMITTERS  - set transmitters NUM [NUM ...]
	  SIMULATE	    - simulate IR event

       REMOTE is the name of a remote, as described in the lircd configuration file.

       CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.

       NUM is the transmitter number of the hardware device.

       For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:

	  LIST	 ""    ""   - list all configured remote names
	  LIST REMOTE  ""   - list all codes of REMOTE
	  LIST REMOTE CODE  - list only CODE of REMOTE

       The SIMULATE command only works if it has been explicitly enabled in lircd.

       -h --help
	      display usage summary

       -v --version
	      display version

       -d --device
	      use given lircd socket [/var/run/lirc/lircd]

       -a --address=host[:port]
	      connect to lircd at this address

       -# --count=n
	      send command n times

EXAMPLES

	  irsend LIST DenonTuner ""
	  irsend SEND_ONCE  DenonTuner PROG-SCAN
	  irsend SEND_ONCE  OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
	  irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
	  irsend SEND_STOP  OnkyoAmpli VOL-DOWN
	  irsend SET_TRANSMITTERS 1
	  irsend SET_TRANSMITTERS 1 3 4
	  irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"

FILES

       /etc/lirc/lircd.conf
	      Default lircd configuration file.  It should contain all the remotes, their infra-red codes and the corresponding timing	and  wave-
	      form details.

DIAGNOSTICS

       If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
       "irsend: could not connect to socket"
       "irsend: Connection refused" (or "Permission denied").

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

       lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.

irsend 0.9.0-pre1						   October 2010 							 IRSEND(1)
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