Hekman, Jessica Perry. Linux in a nutshell : a desktop quick reference / by Jessica Perry Hekman. - 1st ed. - Sebastopol, Calif. : O'Reilly and Associates, 1997. - xi, 424 p. Includes index. Covers GNU software. Linux user commands--The Unix shell : an overview. ISBN: 1565921674 Subjects--Topical Terms: Linux.Operating systems (Computers).