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Full Discussion: How to detect empty field in awk ?
Top Forums Shell Programming and Scripting How to detect empty field in awk ? Post 302793467 by Dona Clara on Friday 12th of April 2013 12:25:06 PM
Old 04-12-2013
How to detect empty field in awk ?
Hi ! programmers

I have a need of detecting empty field in file
my file looks like this

Code:
40.900|-71.600|1.6|20|1|1961|21.00|3.700||1|US|28035|10029370|31
40.900|-71.600|5.7|20|1|1961|21.00|3.700||1|US|28035|10029370|31
40.900|-71.600|7.8|20|1|1961|21.00|3.700||1|US|28035|10029370|31
40.900|-71.600|8.5|20|1|1961|21.00|3.700||1|US|28035|10029370|31
40.900|-71.600|8.7|20|1|1961|21.00|3.700||1|US|28035|10029370|31
-26.667|12.483|1.3|24|1|1961|20.00|16.530|35.059|4|ZA|3|8756280|80
-26.667|12.483|2.5|24|1|1961|20.00|16.530|35.061|4|ZA|3|8756280|80
-26.667|12.483|8.1|24|1|1961|20.00|16.530|35.060|4|ZA|3|8756280|80
40.900|-71.600|8.7|20|1|1961|21.00|3.700||1|US|28035|10029370|31
-26.667|12.483|12.4|24|1|1961|20.00|16.530|35.059|4|ZA|3|8756280|80
-26.667|12.483|13.7|24|1|1961|20.00|16.250|35.035|4|ZA|3|8756280|80
-26.667|12.483|15.9|24|1|1961|20.00|15.860|34.982|4|ZA|3|8756280|80
-26.667|12.483|31.4|24|1|1961|20.00|13.020|34.925|4|ZA|3|8756280|80
-26.667|12.483|34.8|24|1|1961|20.00|13.000|34.999|4|ZA|3|8756280|80

in first column 9th column is empty, in another column 15 column may be empty...so like this I have many files
wherever field is empty I want to print string "BAD" in that location, I need solution for both FS="|" as well as mixed FS tab+space+no of empty spaces

expecting o/p like this
Code:
40.900|-71.600|1.6|20|1|1961|21.00|3.700|BAD|1|US|28035|10029370|31
40.900|-71.600|5.7|20|1|1961|21.00|3.700|BAD|1|US|28035|10029370|31
40.900|-71.600|7.8|20|1|1961|21.00|3.700|BAD|1|US|28035|10029370|31

Those who have solution please help. quick reply will be helpful
Last edited by Dona Clara; 04-12-2013 at 01:40 PM..
 

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LEARN ABOUT DEBIAN

log4c_log4c_priority_error

priority.h(3)							       log4c							     priority.h(3)

NAME

       priority.h -

       The priority class provides importance levels with which one can categorize log messages.

SYNOPSIS

       #include <log4c/defs.h>

   Enumerations
       enum log4c_priority_level_t { LOG4C_PRIORITY_FATAL =  000, LOG4C_PRIORITY_ALERT =  100, LOG4C_PRIORITY_CRIT =  200, LOG4C_PRIORITY_ERROR =
	   300, LOG4C_PRIORITY_WARN =  400, LOG4C_PRIORITY_NOTICE =  500, LOG4C_PRIORITY_INFO =  600, LOG4C_PRIORITY_DEBUG =  700,
	   LOG4C_PRIORITY_TRACE =  800, LOG4C_PRIORITY_NOTSET =  900, LOG4C_PRIORITY_UNKNOWN =	1000 }

   Functions
       LOG4C_API const char * log4c_priority_to_string (int a_priority)
       LOG4C_API int log4c_priority_to_int (const char *a_priority_name)

Detailed Description
       The priority class provides importance levels with which one can categorize log messages.

Enumeration Type Documentation
   enum log4c_priority_level_t Predefined Levels of priorities. These correspond to the priority levels used by syslog(3).
       Enumerator:

       LOG4C_PRIORITY_FATAL
	      fatal

       LOG4C_PRIORITY_ALERT
	      alert

       LOG4C_PRIORITY_CRIT
	      crit

       LOG4C_PRIORITY_ERROR
	      error

       LOG4C_PRIORITY_WARN
	      warn

       LOG4C_PRIORITY_NOTICE
	      notice

       LOG4C_PRIORITY_INFO
	      info

       LOG4C_PRIORITY_DEBUG
	      debug

       LOG4C_PRIORITY_TRACE
	      trace

       LOG4C_PRIORITY_NOTSET
	      notset

       LOG4C_PRIORITY_UNKNOWN
	      unknown

Function Documentation
   LOG4C_API int log4c_priority_to_int (const char *a_priority_name) Parameters:
	   a_priority_name a priority string name.

       Returns:
	   the given numeric value of the priority.

       References LOG4C_PRIORITY_UNKNOWN.

   LOG4C_API const char* log4c_priority_to_string (inta_priority) Parameters:
	   a_priority a numeric value of the priority.

       Returns:
	   the given priority string name.

Author
       Generated automatically by Doxygen for log4c from the source code.

Version 1.2.1							  Mon May 2 2011						     priority.h(3)
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