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Full Discussion: Problems with "grep -vf", and exclusion files
Top Forums UNIX for Dummies Questions & Answers Problems with "grep -vf", and exclusion files Post 302877439 by Doug Lassiter on Sunday 1st of December 2013 10:22:42 AM
Old 12-01-2013
Thanks. Let me be more specific. My log file "log.txt" is pretty big. About 30 MB. My command line is

Code:
grep -vf exclude log.txt > out

If my "exclude" file is a text file with

Code:
206
304
403
404
405
500

It works fine. Almost instantaneously, the file "out" is created, in which lines with these numbers have been properly removed.

But if my exclude file is

Code:
206
304
403
404
405
500
invite

A blank "out" file is quickly created, but the command line doesn't report that it the command has finished. It just hangs. I am careful, by the way, not to have blank lines in my "exclude" file. top tells me that the grep process is still working hard (100% of CPU!), but the "out" file remains blank. That's what I call "never-never land".

Again, the general rule seems to be that a list of *numbers* in my exclude file works fine, as does one or two alphabetic strings. Three alphabetic strings does not work. Not what's nuts about this is that a number *is* an alphameric string (though not an alphabetic string).
Last edited by Don Cragun; 12-01-2013 at 02:12 PM.. Reason: Add CODE tags.
 

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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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