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Full Discussion: Left join on files using awk
Top Forums Shell Programming and Scripting Left join on files using awk Post 302320254 by tonan on Wednesday 27th of May 2009 12:18:21 PM
Old 05-27-2009
well this was easy, you are missing on the syntax

nawk 'NR==FNR{a[$1];next} {if($1 in a) print $1,"Found";print}' OFS="," File_B File_A

-----Post Update-----

sample output

bash-3.00$ nawk 'NR==FNR{a[$1];next} {if($1 in a) print $1,"Found";print}' OFS="," File_B File_A
NY,Found
NY
NJ,Found
NJ
PA
CA,Found
CA
VA,Found
VA
TN
 

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niserror(1)							   User Commands						       niserror(1)

NAME
niserror - display NIS+ error messages SYNOPSIS
niserror error-num DESCRIPTION
niserror prints the NIS+ error associated with status value error-num on the standard output. It is used by shell scripts to translate NIS+ error numbers that are returned into text messages. EXAMPLES
Example 1: Using niserror The following example prints the error associated with the error number 20: example% niserror 20 Not Found, no such name ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnisu | +-----------------------------+-----------------------------+ SEE ALSO
nis+(1), nis_error(3NSL), attributes(5) NOTES
NIS+ might not be supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html. SunOS 5.10 10 Dec 2001 niserror(1)
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