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Full Discussion: Explain this AWK script plz
Top Forums Shell Programming and Scripting Explain this AWK script plz Post 302340301 by Gopal_Engg on Monday 3rd of August 2009 07:15:26 AM
Old 08-03-2009
Explain this AWK script plz
Hi frnds,

one my frnds has given resolution for my problem as below. it working great , but i couldnt understand somethings in the script.
Why ++ operator after the function calling. how these each block working. will each run for each input line sequencially or one block for all the lines and next block execeted? plz clarify.

The script is

Code:
 
# ora.sh
 
awk -v Outfile=ora.txt '
/^ORA-/ {
split($0, f, "\"");
Target_schema = f[2];
Target_table = f[4];
Ora_error = $0;
}
 
/Targ Rowid=/ { 
Rejected_count++ ;
Get_detail++;
printf "#%d => %s\n", Rejected_count, Ora_error;
next;
}
 
/^)/ && Get_detail {
print Rejected_count,Values_detail > Outfile;
Values_detail = "";
Get_detail = 0;
next;
}
 
Get_detail {
sub(/\(.*\):/,"=");
Values_detail = Values_detail $0 "|"
}
 
END {
print "Total Lines in Session Log",FILENAME,"is :",NR;
print "Total Nr of Rejected Records Captured in Sesslog is :",Rejected_count;
} 
' ora.log


 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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