Learning Modern Linux
Michael Hausenblas
PHP, MySQL & JavaScript All in One, Sams Teach Yourself
Julie C. Meloni
Mama Tried
Cecilina Granata
Mastering Swift 5
Jon Hoffman
RFC 4253 - The Secure Shell (SSH) Transport Layer Protocol
T. Ylonen & C. Lonvick
rfc (4253)
SSH - The Secure Shell (2nd Edition)
Daniel J. Barrett & Richard E. Silverman & Robert G. Byrnes