The truth is, I really don't have anything on my hard drive that I would be upset over someone seeing. I have some cat photos. I have a few text files with ideas for future books and/or short stories, and a couple half-written starts to NaNoWriMo novels. It would be easy to say that there's no point encrypting my hard drive, because I have nothing […]
For the past few months, I've been covering different software packages for scientific computations. For my next several articles, I'm going to be focusing on using Python to come up with your own algorithms for your scientific problems. more>>
Most people with Internet access in their houses have visited a speed-test Web site to make sure they're getting somewhere close to the speed they're overpaying for. I'm paying more than $100 a month for my business-class connection from Charter, so on a regular basis, I make sure I'm getting the advertised speed. more>> […]
This article is the second in a series on DNSSEC. In the first one, I gave a general overview of DNSSEC concepts to lay the foundation for this article, which discusses how to enable DNSSEC for a zone using BIND. more>>
Several decent video editors are available on the Linux platform. Kdenlive, OpenShot, Cinelerra and Pitivi are those that come to mind as "big players" in an admittedly small market. I've used them all through the years, with varying levels of success. more>>
I never have a Twitter app crash in the middle of a Tweet. That wouldn't be too terrible to deal with. No, for me, it seems my e-mail application decides to crash after I've spent 20 minutes thumbing out a reply while sitting in a crowded airport. If you've ever lost a love letter, term paper, shopping list or world-class Facebook post, Type M […]
If you need remote access to a machine, you'll probably use SSH, and for a good reason. The secure shell protocol uses modern cryptography methods to provide privacy and confidentiality, even over an unsecured, unsafe network, such as the Internet. more>>
It's nice to have many people visit your Web site. It's even better when people don't just come to your site, but also enjoy your content. But, best of all is when visitors to your site do what you would like them to do—sign up for your newsletter, register for your SaaS application or buy one of your products. more>> […]
I am a new Unix system shell user. I need to find and list all hidden files including directories on a Linux or Unix-like system. How can I recursively list all hidden files and directories? How do I save result in a text file?Read answer to: "Linux / Unix: Find And List All Hidden Files Recursively"
I'm a new Apple OS X Mabbook user. I am getting an error which read as follows when I connect to any remote Linux/Unix/BSD server or machine through OS X ssh Terminal app:ssh firstname.lastname@example.org Last login: Wed Mar 26 08:45:36 2014 from 22.214.171.124 -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory How do I f […]
Sometime my VLC application gets crashed on a Mac OS X system. The screen goes blank and VLC stays hang running on my desktop or MacBook. How can I solve this issue and quit an unresponsive VLC application on a Mac OS X without a hard reboot?Read answer to: "Mac OS X: Force Quit An Unresponsive Full Screen Application Shortcut Key"
I am a new Unix shell programer. How can I extract the directory name from a full path (say /nas01/data/backups/file.tar.gz)? How do I get directory name from its path on a Linux or Unix-like system?Read answer to: "Unix: Find Directory Name From Path"
I am a new Linux server user. I need to tunnel X over ssh. I type the following command on a CentOS/RHEL based remote host to get display on a local desktop:ssh -X email@example.com xeyes & firefox & But, I am getting an error that read as follows:**error**: Failed to contact configuration server; some possible causes are that you need to en […]
I am a new Linux server user. I need to tunnel X over ssh. I type the following command from OS X Unix terminal to login into far_away_machine (a centos server): ssh -X -o options -A -p 22 user@centos-far-away-server But, I am getting the following error on screen:X11 forwarding request failed on channel 0 Last login: Sun Mar 23 15:58:51 2014 from 126.96.36.199 Ho […]
I'm a new Ubuntu Linux user and my cloud hosting company installed MySQL server by default. I need to remove it and delete it from my server as I have no use of MySQL server. How can I uninstall MySQL on a Ubuntu based systems?Read answer to: "HowTo: Uninstall MySQL Server in Ubuntu Linux"
I am a new Linux and Unix-command line user. I am using find command to search file called "fooBar.conf.sample" in my home directory. I do not know the case, it could be uppercase, lowercase, or a mix of both. How can search a file and ignore case on a Linux or Unix-like system?Read answer to: "Linux/Unix: Find Command Ignore Case Insensitive […]
I recently read that SSH keys provide a secure way of logging into a Linux and Unix-based server. How do I set up SSH keys on a Linux or Unix based systems? In SSH for Linux/Unix, how do I set up public key authentication?Read answer to: "HowTo: Setup SSH Keys on a Linux / Unix System"
I am a new Linux and Unix user. How do I change the root directory of a command? How do I change the root directory of a process such as web-server using a chroot command to isolate file system? How do I use a chroot to recover password or fix the damaged Linux/Unix based environment?Read answer to: "Linux / Unix: chroot Command Examples"