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How can I get number of messages count in Postfix's mailq? mailq command display entire mails in mailq but i would like to know count only.Is there any command for this. My OS is centos 5.5.

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up vote 8 down vote accepted

I use this:

mailq | grep -c "^[A-F0-9]"

You can pipe the output of mailq through various other filters such as uniq, sort and wc to get other statistics.

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This is not accurate. When the Postfix queue is empty, then run 'mailq', we will get "Mail queue is empty" which also match "^[0-9A-Z]". And in such a situation it is not accurate. – andy Jul 7 '15 at 12:59
A better regex is ^[A-F0-9] which correctly results in 0 when the mail queue is empty. I've edited the answer. – Ladadadada Oct 6 '15 at 16:26

either mailq | tail -n 1 or find /var/spool/postfix/deferred -type f | wc -l

both works

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Pipe the ouput to wc, if further refining is required, use grep.

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