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Full Discussion: Can you extract (remove) lines from log files?
Top Forums Shell Programming and Scripting Can you extract (remove) lines from log files? Post 302841573 by nbsparks on Wednesday 7th of August 2013 02:21:30 PM
Old 08-07-2013
Slight adjustment needed
Hello,

So I guess I need to refine my request.

Here is a real example of the log from recent testing.

Code:
2013-08-07 18:13:13 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:14 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:16 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:17 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:19 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:21 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:22 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:24 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:25 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:27 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:28 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:30 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:32 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:33 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:35 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:36 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:38 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:39 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:39 [INFO] /127.0.0.1:42057 lost connection
2013-08-07 18:13:41 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:42 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:44 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:46 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:47 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:49 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:50 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:52 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:53 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:55 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:57 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:13:58 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:14:00 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:14:01 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:14:03 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:14:04 [SEVERE] Reached end of stream for /127.0.0.1
2013-08-07 18:14:06 [SEVERE] Reached end of stream for /127.0.0.1

So I guess what I really need is two separate scripts:

1) A script that parses the server.log file and removes ALL instances of lines that contain "[SEVERE] Reached end of stream for /127.0.0.1"

2) A script that parses the server.log file and removes ALL instances of lines that fit this general pattern: "[INFO] /127.0.0.1:????? lost connection" (where ????? represents a random 5-digit port number)

And of course, the scripts have to leave all the remaining logs so that the log file is useful.

Thank you for any help that anyone can provide!
 

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LEARN ABOUT CENTOS

feof

FERROR(3)						     Linux Programmer's Manual							 FERROR(3)

NAME

       clearerr, feof, ferror, fileno - check and reset stream status

SYNOPSIS

       #include <stdio.h>

       void clearerr(FILE *stream);

       int feof(FILE *stream);

       int ferror(FILE *stream);

       int fileno(FILE *stream);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       fileno(): _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE

DESCRIPTION

       The function clearerr() clears the end-of-file and error indicators for the stream pointed to by stream.

       The  function  feof() tests the end-of-file indicator for the stream pointed to by stream, returning nonzero if it is set.  The end-of-file
       indicator can be cleared only by the function clearerr().

       The function ferror() tests the error indicator for the stream pointed to by stream, returning nonzero if it is set.  The  error  indicator
       can be reset only by the clearerr() function.

       The function fileno() examines the argument stream and returns its integer descriptor.

       For nonlocking counterparts, see unlocked_stdio(3).

ERRORS

       These  functions should not fail and do not set the external variable errno.  (However, in case fileno() detects that its argument is not a
       valid stream, it must return -1 and set errno to EBADF.)

ATTRIBUTES

   Multithreading (see pthreads(7))
       The clearerr(), feof(), ferror(), and fileno() functions are thread-safe.

CONFORMING TO

       The functions clearerr(), feof(), and ferror() conform to C89 and C99.

SEE ALSO

       open(2), fdopen(3), stdio(3), unlocked_stdio(3)

COLOPHON

       This page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

								    2013-06-21								 FERROR(3)
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