Technology Tips, and Anything Else
There may be occasions where you want to connect to a host with a long host name, for example ssh servername.example.com – now it’s not massive, but it’s not as quick as ssh servername If you’ve been following droptips.com, you’ll have noticed my other post about setting the port number in the SSH config file …
Continue reading “SSH Client: Saving Server Configuration (Alias, Port, Username)”
If you run an SSH server, or many SSH servers, then you may have set the SSH daemon to run on a non-standard port. SSH normally listens on port 22, but with the large amount of script/bot attacks now on this port, attempting random logins, changing it to something different is a quick way to …
Continue reading “SSH Client: Automatically Connect to a Servers’ Non-Standard Port”
There may be times when you just want to do a quick check to see whether a web site is up, and/or what status message the web server is showing. This won’t actually show you if the page it served up is correct or not, purely the web server status code on whether or not …
Continue reading “Quick command to check the status of a URL (Linux, BSD, OS X)”
As you start using the command line, you’ll come across thousands of different commands, all with their own options and ways of taking options. Every command is different, but help is on hand in the form of man pages. Manual Pages (or man page for short) are the documentation distributed with every command (or, at …
Continue reading “Command Help using Manual Pages (man) (OS X, Linux, BSD)”
If you use OS X, and manage multiple machines over SSH, you’ve probably come across and used screen. You may have noticed that if you SSH to a Linux host from Mac OS X, and try to use the backspace or tab key within a screen session, that you get the “Wuff —- Wuff!!” prompt at …
Continue reading “Wuff —- Wuff!! from Mac OS X to a Screen Session on Linux”
Say you have a text file, and you want to know either how many lines are in the file, how many words are in the file, or how many characters are in the file. How can you do that? Counting them manually would take way too long. This is where wc comes in! The wc …
Continue reading “Count the Number of Words in a Text File (OSX, Linux, BSD)”
If you’re used to running Framebuffer for higher resolution consoles within Linux console, then you’ll be used to the vga=xxx switch on your bootloader. As this takes a three letter code for various resolutions, some may use vga=791 for example – but what if you want a different resolution? You need a different code, which …
Continue reading “Framebuffer Resolution Codes (Linux Console)”
New users to Linux or BSD, will have no doubt come across Vim (or at least Vi). Vim is “Vi IMproved” – it’s simply an extended Vi. You’ll have probably had times when you need to do something very simple, such as Cut and Paste, and not been able to, just because you don’t know …
If you run an SSH server, and have left it on the default port, you’ll probably notice in time lots of login attempts. These login attempts will be from random IP addresses, and usually try lots of different username/password combinations, and hopefully failing. This article will focus on OpenSSH – I’m not sure if all …
Continue reading “Basic Steps to Securing OpenSSH from Random Attacks”
Screenshots; everyone loves them – whether it’s to show off your new shiny desktop, or just to record something on the screen at that moment in time, we’ve all taken lots! I guess at the moment a lot of screenshots are being taken with the GNOME tool, but what if you don’t use GNOME? What …