A quick nagios check using osquery as a backend to retrieve system information:
https://github.com/jamespo/jp_nagios_checks/blob/master/checks/check_osquery
DevDocs API Documentation
DevDocs combines multiple API documentations in a fast, organized, and searchable interface.
Source: DevDocs API Documentation
Persistent ssh-agent in crosh developer shell
Put this at the bottom of your ~/.bashrc
if [ ! -f /tmp/.sshauthsock ]; then eval $(ssh-agent -s) echo "export SSH_AUTH_SOCK=$SSH_AUTH_SOCK" > /tmp/.sshauthsock else source /tmp/.sshauthsock fi
samarudge/dnsyo: Check your DNS against over 1000 global DNS servers
DNSYO is a tool to help keep track of DNS propagation. In short, it’s dig, if dig queried over 1000 servers and collated their results.
Source: samarudge/dnsyo: Check your DNS against over 1000 global DNS servers
Want to load a file into the Perl 6 REPL?
use
EVALFILE 'test.p6'
Red
Red is both an imperative and functional programming language introduced in 2011 by Nenad Rakocevic. Its syntax and general usage directly overlaps with that of the interpreted Rebol language (which was introduced in 1997). Yet the implementation choices of Red were geared specifically to overcoming limitations of Rebol, creating what Rakocevic calls a “full stack programming language”. Red can be used for extremely high-level programming (DSLs and GUIs) as well as low-level programming (operating systems and device drivers).
Source: Red (programming language) – Wikipedia, the free encyclopedia
emacs tip of the week #5: ido-yes-or-no-mode
Just install this from the emacs package manager, add
(ido-yes-or-no-mode)
to your .emacs and you will never again have to laboriously type “yes” in response to “are you sure?” type queries from emacs.
postfix not resolving Reverse DNS
If for some reason postfix isn’t resolving reverse DNS (and giving “unknown” in headers) then you might have configured some of your daemons to run in a chroot without copying the necessary configuration files in, do this by running the appropriate script for your platform under examples/chroot-setup.
Disabling upnp for specific hosts in dd-wrt / openwrt routers
The DCS-932LB1 webcam from D-Link is a very naughty webcam that pretends it has turned off upnp when it hasn’t. This is a security hole, opening up your webcam to the world and D-Link don’t seem to care.
The best thing to do is disable upnp completely in your router, however you might need it. Fortunately if you’re running DD-WRT or OpenWRT you can add custom firewall rules, to block upnp from a specific MAC address you’ll want 2 like this:
iptables -I INPUT -p tcp --dport 5000 -m mac --mac-source b0:c5:54:11:90:20 -j DROP iptables -I INPUT -p udp --dport 1900 -m mac --mac-source b0:c5:54:11:90:20 -j DROP
In DD-WRT this is added in Administration->Commands->Firewall.
emacs tip of the week #4: auto-chmod +x
Put this in your .emacs to automatically make your scripts (bash, python, perl, ruby, etc) executable:
(add-hook 'after-save-hook 'executable-make-buffer-file-executable-if-script-p)