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Full Discussion: To find record having null value
Top Forums Shell Programming and Scripting To find record having null value Post 302988222 by rbatte1 on Thursday 22nd of December 2016 04:17:27 AM
Old 12-22-2016
Hello ginrkf,

From this awk -F ',' $2!=''||$3!='' I can see that you are separating fields on the comma but then I get confused. I think you test that the 2nd field is not null OR the 3rd field is not null.

What is the end goal? I'm wondering if a grep with an extended regular expression might be better, something like this:-
Code:
grep -Ev "^[0-9]*,," file1

This is excluding (-v) lines that match the pattern "Any line starting with zero or more digits followed by two commas (i.e. a null value)"

If that's okay, then we could do something similar for file2, but I'd rather not leap into that if the above is not what you want. The rules can be adjusted to take account of your real data, of course.

Does this help?



Robin
 

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LEARN ABOUT MINIX

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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