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Check if you are vulnerable to the shellshock bug. This is an easy way to find out.

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A vulnerable cygwin shell. Using the shellshock vulnerability to run ls in cygwin. Homer@bejiitas ~ $ x='() { :;}; `/bin/ls -hula`’ bash -c : bash: total 53K drwxrwxr-x+ 1 Homer Homer 0 Sep 26 18:38 . drwxrwxrwt+ 1 Homer Homer 0 Sep 26 2013 .. -rw-rw—- 1 Homer Homer 222 Sep 26 2013 .bash_history -rwxrwxr-x … Read more

How to see if a port is open on a Linux system using netcat.

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The netcat command is a program for querying network connections. This little program may be used to query whether a port is open on a Linux system or not. Here I am determining whether port 443 is open on this Linux Mint machine. homer@deusexmachina ~ $ nc -zv localhost 443 Connection to localhost 443 port … Read more

How to check laptop battery status with the Linux command-line.

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To check the battery status of your Linux laptop; use the acpi command. This will display the status of your laptop battery. exempli gratia. [email protected] ~$ acpi Battery 0: Disharging, 40%, 00:48:32 [email protected] ~$ acpi Battery 0: Disharging, 40%, 00:48:32 remaining. This command also has many other options. This one shows the CPU temperature. [email protected] … Read more

Very dusty computer. The importance of keeping your computer clean and free of dust and lint.

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It is very important to keep your computer clean and free of dust, to stop it looking like this, so get to it. Not only is it ugly, it can damage your components as the heat-sinks get clogged with dust and lint therefore the air from the fan can not freely blow through the heat-sink … Read more