agrep: pattern too long Post: 302174965

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Top Forums Shell Programming and Scripting agrep: pattern too long Post 302174965 by drl on Wednesday 12th of March 2008 06:23:56 PM

03-12-2008

Registered User

Hi.

My experiments:

Code:

#!/usr/bin/env sh

# @(#) s1       Demonstrate [ac]grep, copying a group of lines.

#  ____
# /
# |   Infrastructure BEGIN

echo
set -o nounset

debug=":"
debug="echo"

## The shebang using "env" line is designed for portability. For
#  higher security, use:
#
#  #!/bin/sh -

## Use local command version for the commands in this demonstration.

set +o nounset
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) grep agrep cgrep
set -o nounset

echo

FILE=${1-data1}
echo " Input file $FILE:"
cat $FILE

# |   Infrastructure END
# \
#  ---

echo
echo ' Results from grep:'
grep '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep:'
agrep '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d:'
agrep -d seconds '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d -k:'
agrep -d seconds -k '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

echo
echo ' Results from agrep with -d <>:'
agrep -d seconds '<29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05>' $FILE

echo
echo ' Results from cgrep:'
cgrep +I2 -+w seconds '29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05' $FILE

exit 0

Producing:

Code:

% ./s1

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
grep (GNU grep) 2.5.1
agrep (local) - no version provided.
cgrep (local) - no version provided.

 Input file data1:
seconds
nothing here

seconds
junk
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05
junk

seconds
junk
still no match
more junk

 Results from grep:
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05

 Results from agrep:
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05

 Results from agrep with -d:
agrep: pattern too long

 Results from agrep with -d -k:
agrep: pattern too long

 Results from agrep with -d <>:
agrep: pattern too long

 Results from cgrep:
========================================
seconds
junk
29 06 0e 2b 06 01 04 01 9d 64 03 08 02 01 05 05
junk

The source for the successful cgrep may be obtained from: cgrep home page

You'll need to compile and install it, but it went easily for me. If that's not an acceptable option for you, then perhaps one of the awk experts will stop by and help ... cheers, drl

drl

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noecho

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							    echo(3XCURSES)