generic methodology to debug ordering cycles in systemd
I am aware of following thread and supposedly an answer to it. Except an answer is not an answer in generic sense. It tells what the problem was in one particular case, but not in general.
Unix & Linux
How can I communicate with a Unix domain socket via the shell on Debian Squeeze?
I’m running a Debian Squeeze web server. I’ve installed memcached on it, and configured memcached to listen on a Unix domain socket (at /tmp/memcached.sock), as it only needs to receive messages from the website, which lives on the same server.
Clone whole partition or hard drive to a sparse file
I like to clone a whole partition or a whole hard drive onto a larger external disk but like to create a sparse file. I often use dd for cloning, but it doesn’t support sparse files. As a workaround I used something like:
How can I find the package that contains a program in Debian?
I am using a minimal Debian system which does not have the top program installed. I tried to install top with sudo apt-get install top, but top is not a package name. It seems that top is a part of some other package. How can I find out which package I should install to get … Read more
How can I use DD to migrate data from an old drive to a new drive?
I am upgrading the internal SATA hard drive on my laptop from a 40G drive to a 160G drive. I have a Linux/Ubuntu desktop which has a SATA card. I would actually like to do the same thing for a couple CentOS & FreeBSD boxes at work, and it seems this would have the same solution.
What is a tainted Linux kernel?
Under certain conditions, the Linux kernel may become tainted. For example, loading a proprietary video driver into the kernel taints the kernel. This condition may be visible in system logs, kernel error messages (oops and panics), and through tools such as lsmod, and remains until the system is rebooted.
Tell SSH to use a graphical prompt for key passphrase
How can I force SSH to request passphrases using a graphical prompt (GTK, for example) instead of the standard one that uses the terminal?
How to restrict a user to one folder and not allow them to move out his folder
I have ubuntu server on digitalocean and I want to give someone a folder for their domain on my server, my problem is, I don’t want that user to see my folders or files or to be able to move out their folder.
How can I add man page entries for my own power tools?
I have no idea about how I can make my home-grown specialist scripts (written mostly in Bash and Perl) available through the man pages.
Why doesn’t “sudo su” in a shell script run the rest of the script as root?
A sample script can be as below: