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Top Forums Shell Programming and Scripting BASH: Grepping/sedding/etc out part of a file... (from one word to 'blank' line) Post 302267009 by elinenbe on Thursday 11th of December 2008 01:05:31 PM
Old 12-11-2008
BASH: Grepping/sedding/etc out part of a file... (from one word to 'blank' line)

I have a file that lists data about a system. It has a part that can look like:

the errors I'm looking for with other errors:
Code:
Alerts
 Password Incorrect
 Login Error
 Another Error
 Another Error 2
 
Other Info

or, just the errors I need to parse for:
Code:
Alerts
 Password Incorrect
 Login Error
 
Other Info

or, if no alerts:
Code:
 
Other Info

What I need to do is parse the file, and branch iff the error "Password Incorrect" or "Login Error" comes up. If those come up with other errors that is fine. The file doesn't always include errors (actually this is usually the case). Also, what makes this difficult for me is the line after the last alert isn't blank -- it actually contains a single space.

I have code for it, but it's getting messier and messier, and I'm sure you guys help me out with something WAY more elegant.

Thanks,
Eric
 

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GENDERS_PARSE(3)						    LIBGENDERS							  GENDERS_PARSE(3)

NAME
genders_parse - determine errors with a genders file SYNOPSIS
#include <genders.h> int genders_parse(genders_t handle, const char *filename, FILE *stream); DESCRIPTION
genders_parse() parses the genders file indicated by filename and outputs information to stream about parse errors in the genders file. If filename is NULL, the default genders file will be checked. If stream is NULL, information will be output to standard error. RETURN VALUES
On success, the number of parse errors discovered is returned. If there are no errors, 0 is returned. On error, -1 is returned, and an error code is returned in handle. The error code can be retrieved via genders_errnum(3) , and a description of the error code can be retrieved via genders_strerror(3). Error codes are defined in genders.h. ERRORS
GENDERS_ERR_NULLHANDLE The handle parameter is NULL. The genders handle must be created with genders_handle_create(3). GENDERS_ERR_OPEN The genders file indicated by filename cannot be opened for reading. GENDERS_ERR_OVERFLOW A line in the genders database exceeds the maximum allowed length. GENDERS_ERR_MAGIC handle has an incorrect magic number. handle does not point to a genders handle or handle has been destroyed by genders_han- dle_destroy(3). FILES
/usr/include/genders.h SEE ALSO
libgenders(3), genders_handle_create(3), genders_errnum(3), genders_strerror(3) LLNL
August 2003 GENDERS_PARSE(3)
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