A quick script to process fdupes output and allow interactive selection of files to delete. Differs from the built-in fdupes prompts in that you can select directories to condemn.
I had issues with Apache periodically hanging (failing to deliver a response body to any requests) on all my vhosts. This turned out to be solved by restarting php5-fpm. I enabled the slowlog in php5-fpm to try and find out which scripts were stalling:
sudo mkdir -p /var/log/php5-fpm
sudo vim /etc/php5/fpm/pool.d/www.conf
; The log file for slow requests
; Default Value: not set
; Note: slowlog is mandatory if request_slowlog_timeout is set
slowlog = /var/log/php5-fpm/$pool.log.slow
; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_slowlog_timeout = 5s
After a day or so I read the logs and found lots of slow requests to xmlrpc.php for WordPress vhosts.
A crude but effective solution is to block requests to the XML-RPC and Trackback APIs. These features are sometimes targeted by bots for brute force login attempts. I do not use them so I don’t mind disabling them entirely.
Edit your Apache vhost configuration (or .htaccess if you don’t have access to this):
<FilesMatch "^(xmlrpc\.php|wp-trackback\.php)">
Order Deny,Allow
Deny from all
#Allow from x.x.x.x
</FilesMatch>
I noticed considerably lower latency when serving requests to PHP pages after this change.
To create a new filter:
www.facebook.com###pagelet_trending_tags_and_topics
If you use Facebook, you’ve probably seen entries like this in your news feed.
They seem to just be popular posts from pages that your friends ’like’. I find them to generally be irrelevant, so I made a user script to hide them.
It was an interesting opportunity to poke around the Facebook frontend JavaScript code. I also tried out MutationObservers and built my knowledge of XPath, which is very powerful.
Code is in the Hide_Facebook_Like_News.user.js Gist, which also explains how to use it:
passletters is a tiny command line utility to read a password from stdin and echo it with letters enumerated (for entry into web prompts that demand random, individual letters). The terminal scrollback is cleared afterwards.
sudo pip install passletters
NB: sudo may be needed to install the passletters script somewhere in your PATH.
https://github.com/inversion/passletters
https://pypi.python.org/pypi/passletters