AWS
Borrowed this from a site I had to pull up via Google's cache with some additions. I recently needed to convert an AWS instance-store AMI to an EBS backed AMI. Here’s the steps I took in order to fix that. It’s a ext3 file system in this example,
CLI
If you're looking to edit the _link file stored in the repository underlying
your OBS you can check it out with the --unexpand-link option. Otherwise you'll
end up with the _service file:
osc checkout --unexpand-link
CLI
The easiest way to accomplish this is if you have a relatively recent GNU version of grep. Then the -H version is available to you: printf "This\nis\a\ntest" > /tmp/grep.test grep -H 'is' /tmp/grep.test /tmp/grep.test:This /tmp/grep.test:is But if the
SSH
If you've got a private key you're fond of that either has or lacks a passphrase(password) and you'd like to add (because you'd like to put it someplace you trust slightly less) or remove (because you're moving it someplace you trust more [really?]) it's really straight forward. To add
CLI
I've seen a lot of convoluted solutions floating around regarding how to copy files starting with .. The problem everyone is trying to avoid is that when you run something like: cp -r A/.* B/ The above command starts copying everything the entire "A" directory (.) and then from the parent directory
If your sSMTP is configured to use gmail is giving you the following error: send-mail: Cannot open smtp.gmail.com:587 and in /var/log/maillog you see: sSMTP: SSL not working: certificate verify failed (20) sSMTP: Cannot open smtp.gmail.com:587 adding below line to /etc/ssmtp/ssmtp.
If you're trying to send e-mail from PHP (in Drupal or not) using sSMTP you'll find any page sending an e-mail out stalling for several seconds while sSMTP logs in and sends the e-mail out. It's a serious performance hit and can make using your website rather annoying. If you're
CLI
[http://instacod.es/90274] OpenSSH [http://www.openssh.com/] has some pretty cool tricks up its sleeve beyond it's "Clark Kent"-esque ability to provide a secure command line interface on a remote system. Here are some of its more "Superman"-type abilities: * Public-Key Authentication * Learn to Love Your .ssh/
CLI
Have you ever started a long running command and then wanted to put it in the background but it's sending its output to STDOUT? Here's a script that uses gdb to swap a processes file descriptors so you can send all that output to a file, or /dev/null after
CLI
There are certain commands that really want to read input in from a file, like diff. However, if what you're trying to manipulate or use with one of these commands is actually output from another command usually you'd have to write this information out to a file before reading it
Apache
If you've got another web application running on your server, but still want it served up on port 80 or 443 you can use Apache's mod_proxy to forward traffic from Apache to your application. An example would be if your web application is running on http://localhost:8080 you
Backups
[http://www.amazon.com/gp/product/B004VJ46M4/ref=as_li_ss_il?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004VJ46M4&linkCode=as2&tag=xen02-20] In my quest to restore some binaries from a Windows client to a Linux client (an unsupported operation) with NetBackup I had to trim off a