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Full Discussion: Problem with Regular expression in awk
Top Forums Shell Programming and Scripting Problem with Regular expression in awk Post 302796287 by itkamaraj on Friday 19th of April 2013 07:28:12 AM
Old 04-19-2013
try with nawk

Code:
$ awk -F, '$1+0!=0 && $2+0!=0' a.txt
14,30
28,30
16,30
22,30
21,30
3,30
$ echo "A,B" >> a.txt
$ echo "1,3" >> a.txt
$ cat a.txt
14,30
28,30
16,30
22,30
21,30
3,30
A,B
1,3
$ awk -F, '$1+0!=0 && $2+0!=0' a.txt
14,30
28,30
16,30
22,30
21,30
3,30
1,3
$ awk -F, '$1+0==0 || $2+0==0{print "Not a valid file";exit}' a.txt
Not a valid file

 

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LEARN ABOUT CENTOS

ausearch_add_regex

AUSEARCH_ADD_REGEX(3)						  Linux Audit API					     AUSEARCH_ADD_REGEX(3)

NAME

       ausearch_add_regex - use regular expression search rule

SYNOPSIS

       #include <auparse.h>

       int ausearch_add_regex(auparse_state_t *au, const char *expr);

DESCRIPTION

       ausearch_add_regex  adds  one  search condition based on a regular expression to the current audit search expression. The search conditions
       can then be used to scan logs, files, or buffers for something of interest. The regular	expression  follows  the  posix  extended  regular
       expression conventions, and is matched against the full record (without interpreting field values).

       If an existing search expression E is already defined, this function replaces it by (E && this_regexp).

RETURN VALUE

       Returns -1 if an error occurs; otherwise, 0 for success.

SEE ALSO

       ausearch_add_expression(3), ausearch_add_item(3), ausearch_clear(3), ausearch_next_event(3), regcomp(3).

AUTHOR

       Steve Grubb

Red Hat 							     Sept 2007						     AUSEARCH_ADD_REGEX(3)
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