Some services offer free SSH accounts, so you can edit and access files anywhere, host websites, use them as proxies (or IPv6 gateways) and some even let you run processes like IRC bots and compilers.

Generally, such free Shell accounts impose a monthly bandwidth quota of a few megabytes, so you don’t use too much of their resources. Some providers are more generous than others, though, and some charge for additional space and bandwidth.

Most SSH providers offer Unix-based hosting. Mitja Sladovic offers a very large list of such free providers.

The most popular service is the SDF Public Access UNIX System, established in 1987. Free users are offered email hosting (POP or IMAP), games, access to the text-based ‘Lynx’ web browser, web hosting, various network utilities and 80MB space. For access to gcc, php etc., one must a one-off fee of $36. In order to validate your account, and receive access to network utilities, one must send them $1 or €5 (in order to deter spammers).

Blinkenshell is another interesting option. Free accounts get 50MiB of space, access to several compilers, an IPv6 tunnel, hosting, email, IRC access and even the ability to have MySQL databases. One can’t use Blinkenshell for IRC bots, though. A few services do provide access to eggdrop, a popular IRC bot, such as Polarhome and aeshells.

Naturally, novices may struggle with such services as no graphical interface is provided. These services do, however, provide a rapid way to compile applications on different platforms (like Linux and BSD) and allow boring processes, like IRC bots, to run for you.

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I was about to give up hope and copy the files manually when I came across an extremely powerful, yet simple, Unix command: dd.

Using a Linux live disc, dd can be used to copy files, disks and partitions. It can output directly onto another disc or as an image (like an iso).

dd copies data byte-exactly, meaning it won’t get stuck should it encounter corrupted or fragmented data.

dd is nicknamed ‘destroy disk’ as mistyping one letter can wipe your hard disk, so caution must be used.

To copy a hard disk, one would use the following command (whilst root):

dd if=/dev/hdx of=/dev/hdy

hdx is the input hard disk (to be copied) and hdy is the output hard disk (where it is to be copied to).

if = input
of = output

This is extremely important to remember and their names must be altered according to how they are on your computer (use a tool like gParted to find out your drive’s paths). For example, your ‘if’ may be /dev/sdb whilst your ‘of’ may be /dev/sda, but this obviously varies according to how you want to use it and computer-by-computer so you MUST check. An extremely intelligent friend of mine accidentally wiped a hard drive using this command!

Another use would be to use it to produce a CD image:

dd if=/dev/cdrom of=image.iso bs=2k.

Debian Help has a more complete guide.

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Xming is an X server for Windows which can be used to secure forward X11 sessions from Unix machines. Basically, using Xming, a graphical program, like Firefox or xeyes, can be run remotely from an SSH server with X11. Using X11 tunneling, many things can easily be done remotely, whether that be word processing, file-sharing or accessing an email client.

Xming requires a little configuration. In my opinion, Xming works best with the Putty and comes with it. ssh.exe can also be used.

Putty must be configured to enable X11 forwarding, which is done inside Putty by going to SSH>X11 and ticking ‘Enable X11 forwarding’. Whilst programs can be launched via remote SSH terminal, the Xlaunch program which comes with Xming is much easier to use.

In Xlaunch, the chosen view for X11 windows is chosen (one window, multiple windows or full screen), the SSH server and login details is entered as is the application which is to be run. xterm (the terminal) is a good choice!

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I´am babbling, forgive me. I found a comprehensive Linux guide which gives you a good understanding of the linux operating system. The guide visualizes everything with screenshots and code tags to assist new users even more. If you ever thought of switching this guide might be just what you´ve been waiting for.

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