According to gsingh93, the original author of SKeyLogger:
SKeylogger is a simple keylogger. I had previously been using a few other open source keyloggers, but they stopped working when I upgraded my operating system. I tried to look through the code of those keyloggers, but it was undocumented, messy, and complex. I decided to make my own highly documented and very simple keylogger.
makeMust be run as root user.
Usage: skeylogger [OPTION]
Logs pressed keys
-h, --help Displays this help message
-v, --version Displays version information
-l, --logfile Path to the logfile
-d, --device Path to device file (/dev/input/eventX)