Changing MySQL temporary directory in Ubuntu
If you want to change the directory that the MySQL server uses to create and store temporary files (usually the default directory is /tmp), you must set the tmpdir option, either by by putting a…
Check public IP from command line
Sometimes you may need to know your public IPv4 address. If you have an open browser window you may go to https://www.whatismyip.com/ or to http://canihazip.com/. However, I prefer the latter…
The Internet is awesome
Yes, the Internet is full of trolls, 87% of people on the internet are assholes and many people (especially women) suffer from online harassment. And, yes, getting information off the Internet is like taking a…
To clobber or to noclobber?
In the context of a command line interpreter, clobbering means overwriting the contents of a file using shell redirection (using the > and >> operators). This is sometimes useful, sometimes catastrophic. By default, the…
Fix problem running iptables on a DigitalOcean Ubuntu droplet
If you run into this on Ubuntu when trying to execute iptables on your DigitalOcean Ubuntu droplet: modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file '/lib/modules/3.…