Category: Linux

Link: How To Add Launchpad PPAs In Debian Via `add-apt-repository` Command

“add-apt-repository” is an Ubuntu-specific script to add or remove repositories which, among others, automatically imports the public GPG key. For more information, see its man page.

You can use “add-apt-repository” in Debian to add Launchpad PPAs however, there are a few things that you should know. Read on to find out how to use “add-apt-repository” in Debian.

Full article here:
How To Add Launchpad PPAs In Debian Via `add-apt-repository` Command (Web Upd8)

Link: How to Check the Progress of Running Commands in Linux

Sometimes, while copying a large file, like a movie or an operating system image, the cp command takes longer than expected based on the load on your system. Since it doesn’t tell the progress of the operation, it gets difficult to understand what exactly is happening.

In scenarios like these, a command like cv could be of great help, as it not only lets you know the progress of the operation, but is also capable of displaying the remaining time. In this article, we will discuss the command along with some useful examples.

Full article here:
How to Check the Progress of Running Commands in Linux (Make Tech Easier)

Link: Spider a Website with Wget – 20 Practical Examples

How do I download an entire website for offline viewing? How do I save all the MP3s from a website to a folder on my computer? How do I download files that are behind a login page? How do I build a mini-version of Google?

Wget is a free command line program – available for Mac, Windows and Linux (included) – that can help you accomplish all this and more. What makes it different from most download managers is that wget can follow the HTML links on a web page and recursively download the files.

Full article here:
Spider a Website with Wget – 20 Practical Examples (Digital Inspiration)

Link: Working with Arrays in Linux Shell Scripting – Part 8

We cannot imagine a programming language without the concept of arrays. It doesn’t matter how they are implemented among various languages. Instead arrays help us in consolidating data, similar or different, under one symbolic name.

Here as we are concerned about shell scripting, this article will help you in playing around with some shell scripts which make use of this concept of arrays.

Full article here:
Working with Arrays in Linux Shell Scripting – Part 8 (Tecmint)

Link: ODROID-C1 is a $35 quad-core, single-board Android/Linux PC

When the Raspberry Pi team launched a tiny, low power computer priced at just $35, it was pretty remarkable. But that was 2 years ago, and while the Raspberry Pi has seen a few updates in that time, it’s still powered by the same single-core 700 MHz Broadcomm BCM2835 ARM11 processor.

Over the past few years a number of other single-board computers with more powerful hardware have appeared, but they usually also have higher price tags.

Hardkernel’s ODROID-C1 doesn’t though… it’s a quad-core mini computer that sells for just $35.

odroid-c1_01

Full article and demonstration videos here:
ODROID-C1 is a $35 quad-core, single-board Android/Linux PC (Liliputing)
Related:
$35 quad-core hacker SBC offers Raspberry Pi-like size and I/O (LinuxGizmos.com)
Ordroid-C1 vs Raspberry Pi B+: Hardware, Benchmark, Storage and Ethernet Performance Comparison tables from Ordroid

Link: cpio command – copies, lists & extracts files to and from archives

Linux/UNIX cpio (copy in/out) command copies, lists, and extracts files to and from a single file or archives. Some of the options available with cpio command are listed in the below table . The cpio command requires that one of the o, i, or p options must be specified.

Full article here:
cpio command – copies, lists & extracts files to and from archives (NextStep4it)

Link: Monitorix – An Open Source, Lightweight System Monitoring Tool For Linux

Monitorix is a free, Open Source monitoring tool that can be used to monitor as many services and system resources as possible. Unlike other monitoring tools, it is very simple to install, configure and monitor the systems. Initially, it was developed to support only the RPM based systems such as Red Hat, CentOS etc., but, later it is expanded its support to other distributions like Debian/Ubuntu, and BSD systems such as FreeBSD, NetBSD, and OpenBSD.

Full article here:
Monitorix – An Open Source, Lightweight System Monitoring Tool For Linux (Unixmen)

Link: 10 ‘free’ Commands to Check Memory Usage in Linux

Linux is one of the most popular open source operating system and comes with huge set of commands. The most important and single way of determining the total available space of the physical memory and swap memory is by using “free” command.

The Linux “free” command gives information about total used and available space of physical memory and swap memory with buffers used by kernel in Linux/Unix like operating systems.

Full article here:
10 ‘free’ Commands to Check Memory Usage in Linux (Tecmint)

Link: Set Up SSH Tunneling on a Linux / Unix / BSD Server To Bypass NAT

I’m a new Linux / Unix system user. How can I set encrypted tunnel between my desktop/laptop computer and server in a remote data center to bypass the limits in a network? How do I create a reverse SSH tunnel on Unix-like systems?

SSH tunnelling can be thought as a poor-man’s-VPN. It is handy in situations where you would like to hide your traffic from any body who might be listening on the wire or eavesdropping. You can use such tunnel between your computer and your Unix/BSD/Linux server to bypass limits placed by a network or to bypass NAT, and more.

Full article here:
Set Up SSH Tunneling on a Linux / Unix / BSD Server To Bypass NAT (nixCraft)