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A keylogger is hardware/software based, that works on the background and maps every key stroke onto a log file without the users awareness.

For linux x86 architecture, LKL is the common keylogger ,also known as Linux KeyLogger.Linux Key Logger is a open source and a free software.Once installed the keylogger maps the keyboard port 0×60 for all the keystrokes into a log file.So here is how to install the software in Ubuntu.

Step 1: Download the software using the sourceforge link here.

Step 2 : Extract the files from the archive.

Step 3 : Open the Console and move the directory to this lkl folder, cd lkl.

Step 4 : Next check the required resources by running the ./configure command.

Step 5 : Compile the package using the make command and after that you can even run themake check to run the optional tests after the make.

Step 6 : Run sudo make install to install the package program.

This completes the installation process of the software.

After you finis installing the software, here are the instructions and options to work with the software.

Type ‘lkl‘ command with the following options

-k  <keymap_file> : set keymap file

-o <output_file>    : set an output file

-l   : start logging keystrokes via keyboard port

-h  : help

-m <mail_id>         : mail the logs to specific email

-t   <host>                : set host to send to mail (default : localhost)

-b  : set debug mode

Hope this helped you in successfully installing the software.Leave your comments below for queries or any other help.Cheers..:)