Linspy is keystroke logger for linux kernels v2.2 and 2.4 which records TTY activity. Based on Halflife’s article from Phrack 50.
You can download it from the following link: https://packetstormsecurity.com/files/download/25956/linspy2beta2.tgz
Source: https://packetstormsecurity.com/files/25956/linspy2beta2.tgz.html