find files from a certain date range in linux

When you need to find a file from a specific range of dates, like a reciept that you know you saved but can't remember where.. You can use the find command along with some parameters to find files newer than a specific date, older or between two dates.

Bash one-liner to fix "Failed to fetch" error for chrome in ubuntu

See this page for details on how an why, but here's the error:

W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release:
    Unable to find expected entry 'main/binary-i386/Packages'
    in Release file (Wrong sources.list entry or malformed file)

And this will fix it in one shot:

sudo sed -i 's?deb http://dl.google.com/linux/chrome/deb/ stable main?deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main?g' /etc/apt/sources.list.d/google-chrome.list

bash functions to view markdown documents

If you're writing markdown documents from vim or emacs, here's a couple handy ways to view them as rendered HTML.

Kill an ssh connection from the server side

So you don't like Bob today or maybe you want to test a failed connection.. Whatever your reason you need to kill the ssh connections for his user on your server.

Reverse SSH Forward with special user

We will create a user on our machine that the remote machine can connect as and initiate a reverse port forward. For this example, we'll allow the remote machine to connect with the user name "ssh-limited" and forward port 62222 back to themselves.