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Are you feeling the heat on your dedicated server, getting high I/O wait times?
If you are using EXT3 partitions then it is worth checking to see if they are mounted using ‘noatime’. If they are not, then every read to your partition is also a write which can massively reduce hard drive performance.
First, find all partitions mounted as EXT3 mount without noatime:
# mount | grep ext3
/dev/sda1 on / type ext3 (rw,noatime) /dev/sdb1 on /backup type ext3 (rw)
Any not showing the noatime attribute, simply remount like so:
# mount -o remount,noatime /backup
You can do this without a server reboot, you can do this with the server live and with the partitions already mounted.
If your AtMail search is not working, you can apply the following fix to lines 364 and 369:
sed -i 's/20$BeforeYear/$BeforeYear/g' /var/www/atmail/search.php sed -i 's/20$AfterYear/$AfterYear/g' /var/www/atmail/search.php
This fixes a bug in the search.php file for AtMail 1.04 and 1.05.
Find all HTML files that contain the text “Loading”
# find . -name *.html -exec grep -il "Loading" {} \;
Find all files modified in last 7 days
# find . -mtime -7
Find all .PHP files modified in last 7 days
# find . -name *.php -mtime -7
Find and Remove all PHP files modified in last 7 days
# find . -name *.php -mtime -7 | xargs rm
Find all files modified in last 10 days that contain text “Loading” and move to /trash
# find . -type f -mtime -10 -exec egrep -l "Loading" {} \; -exec mv -f {} /trash \;
If you used an auto installer for WordPress you may find that many of your files and folders have 777 attributes, this can be a risk and this permissions can be abused by compromised plugins.
To tighten up your folder, use SSH and locate your /httpdocs folder:
# find . -type d -exec chmod 755 {} \;
# find . -type f -exec chmod 644 {} \;
# chmod 750 ../httpdocs
At the same time, you might want to execute maldet to ensure there is no malware present:
# maldet -a ../httpdocs
Always ensure you are using the latest revision of WordPress. This is the single most important rule for ensuring maximum security of your WordPress site.