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Top Forums UNIX for Beginners Questions & Answers Finding records NOT on another file Post 303025573 by apmcd47 on Tuesday 6th of November 2018 04:28:01 AM
Old 11-06-2018
Sorted (untested):
Code:
comm -23 <(sort ALL) <(sort MATCH DIFF)

Unsorted (untested):
Code:
fgrep -f <(comm -23 <(sort ALL) <(sort MATCH DIFF) ALL)

You may wish to use the -u switch to sort to remove duplicate lines.

Andrew
 

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GETMXRR(3)								 1								GETMXRR(3)

getmxrr - Get MX records corresponding to a given Internet host name

SYNOPSIS
bool getmxrr (string $hostname, array &$mxhosts, [array &$weight]) DESCRIPTION
Searches DNS for MX records corresponding to $hostname. PARAMETERS
o $hostname - The Internet host name. o $mxhosts - A list of the MX records found is placed into the array $mxhosts. o $weight - If the $weight array is given, it will be filled with the weight information gathered. RETURN VALUES
Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | This function is now available on Windows plat- | | | forms. | | | | +--------+---------------------------------------------------+ NOTES
Note This function should not be used for the purposes of address verification. Only the mailexchangers found in DNS are returned, how- ever, according to RFC 2821 when no mail exchangers are listed, $hostname itself should be used as the only mail exchanger with a priority of 0. Note For compatibility with Windows before this was implemented, then try the PEAR class Net_DNS. SEE ALSO
checkdnsrr(3), dns_get_record(3), gethostbyname(3), gethostbynamel(3), gethostbyaddr(3), the named(8) manual page. PHP Documentation Group GETMXRR(3)
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