damonparker.org

Enable Sendmail for PHP mail() in OSX

damonp — Thu, 25 Feb 2010 22:05:41 +0000

Since this didn’t dawn on me for thirty minutes while I pursued other avenues…

In /etc/hostconfig add/edit a line like:

MAILSERVER=-YES-

Note to self: Look for more OSX server administration clients.

Apache Log Grepping

damonp — Mon, 14 Sep 2009 18:34:51 +0000

Nothing beats a full stats package, but with a little grepping and a logfile and we can figure out some quick statistics.

Get only hits coming from Google.com/search:

grep 'google.com/search' access_log | head -1

Extract only the referrer field:

grep 'google.com/search' access_log | head -1 | awk '{print $11}'

Get the search terms only:

grep 'google.com/search' access_log | \
head -1 | \
awk '{print $11}' | \
cut -d\? -f2 | cut -d\& -f1 | \
sed 's/+/ /g;s/%22/"/g;s/q=//'

Here’s a little script that puts it all together. It finds the unique search terms, cleans out the trash, sorts them and list the top twenty five in order of descending hit count.

#!/bin/sh
LOG="/var/logs/httpd/access_log"
grep 'google.com/search' $LOG | \
awk '{print $11}' | \
cut -d\? -f2 | cut -d\& -f1 | \
sed 's/+/ /g;s/%22/"/g;s/q=//' | \
sed 's/%[0-9a-fA-F][0-9a-fA-F]/ /g;s/"//g' | \
grep -v '=' | sort | uniq -c | sort -rn | head -25

To see them all remove the | head -25 statement at the end of the command.

Thanks to an article at Linux Journal for the examples.

Find setuid root Files

damonp — Fri, 11 Sep 2009 04:29:20 +0000

Find all setuid / setgid files owned by root:

find / -user root -type f $ -perm -4000 -o -perm -2000 $ -exec ls -ld '{}' \;

Find all setuid / setgid files owned by any user:

find / -type f $ -perm -4000 -o -perm -2000 $ -exec ls -ld '{}' \;

Debugging HTTP Headers with cURL

damonp — Mon, 31 Aug 2009 16:05:39 +0000

curl -I http://damonparker.org

More info on cURL

Back

damonp — Sat, 29 Aug 2009 19:54:05 +0000

After nearly two years with not much to say, I decided to pick up the blog again. It was a long and winding journey, this time in between. Maybe more on that later.

I should be updating the pages of the blog with current info about myself and my projects over the next few weeks.

As always, the shop is open for any sysadmin or development projects.

DNS, Lookupd and OS X

damonp — Thu, 15 Nov 2007 19:27:30 +0000

Pre-Leopard the command to force OS X to flush and reload it’s DNS cache was:

sudo lookupd -flushcache

In Leopard, lookupd no longer exists. Instead force a DNS cache refresh with:

sudo dscacheutil -flushcache

OSX Scrollbars Top and Bottom

damonp — Mon, 05 Nov 2007 22:00:16 +0000

In Terminal:

defaults write "Apple Global Domain" AppleScrollBarVariant DoubleBoth

MailAnnounce Applescript Source

damonp — Tue, 09 Oct 2007 13:49:41 +0000

I have received several requests for the source of my MailAnnounce script that is able to speak the subject of mails using Mail.app and Applescript.

Source for version 1 of the script is now available.

rpmdb: unable to join the environment

damonp — Mon, 10 Sep 2007 17:03:15 +0000

This weekend I was contacted by a client regarding a server that had run out of room on the main hard drive. Among the things that were corrupted by the drive filling up was the RPM database.

When trying to query of upgrade any package, the error message

rpmdb: unable to join the environment
error: db4 error(11) from dbenv->open: Resource temporarily unavailable
error: cannot open Packages index using db3 - Resource temporarily unavailable (11)
error: cannot open Packages database in /var/lib/rpm
warning: /root/webmin-1.360-1.noarch.rpm: V3 DSA signature: NOKEY, key ID 11f63c51
rpmdb: unable to join the environment
error: db4 error(11) from dbenv->open: Resource temporarily unavailable
error: cannot open Packages database in /var/lib/rpm
rpmdb: unable to join the environment
error: db4 error(11) from dbenv->open: Resource temporarily unavailable
error: cannot open Packages database in /var/lib/rpm

A search turned up this howto on repairing the db.

These two commands made quick work of the fix. First remove any old lock files:

rm -f /var/lib/rpm/__db*

Then rebuild the RPM database:

rpm -vv --rebuilddb

Blattodephobia

damonp — Mon, 10 Sep 2007 05:55:30 +0000

n. The fear of cockroaches