Tar commands
To create an archive using tar, use a command like this, which bundles all the files in the current directory that end with .txt into the alltxt.tar file:…
Show user Library directory on a Mac
Mac OS X defaults to hiding the users Library directory. No doubt, this was changed to keep novices from deleting necessary system files. Those that wish may show…
Tunnel YUM traffic through an SSH proxy connection
My work environment has heavily restricted access to the outside from any of our machines. I am often spinning up new Linux machines for testing purposes and getting…
Creating an SSH tunnel for proxy connections
Often it is helpful to tunnel certain traffic through an SSH tunnel. If you are on a public wifi connection where you may fear someone else intercepting your…
VIM – Enable color syntax
It may be easier to edit html or other code by enabling color syntax within VIM. You can do this for individual users by creating a .vimrc file…
Fixing VMware ESX cannot synchronize host
In the process of upgrading some ESXi hosts, I had one host that showed an error as follows. vmware esx cannot synchronize host To resolve this issue, resynchronize…
Re-run boot loader
Often when updating my Ubuntu systems, I am presented with the following after running apt-get Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.13.0-77-generic Found initrd image: /boot/initrd.img-3.13.0-77-generic…
Exporting and Importing MariaDB/MySQL Databases
To export a database use the following command: mysqldump --add-drop-table -u username -p dbname > dbname.sql NOTE: Omit the –add-drop-table argument if you plan to merge this backup with an…
Show all available versions of packages from YUM
Sometimes you may wish to see not only the version of a package you currently have installed but also the versions that are available for installation. Using following…
Properly Closing a Frozen SSH Session
Remote SSH sessions will often freeze after a period of inactivity. Sure you can simply close the terminal but a better option is to properly disconnect from a…