Contents for notes files
Filename Description Commands used
30notes UNIX Pipeline and Sequenced, head, more, nl,
Commands, Command examples fmt, rev, tail,
tee, wc
31notes UNIX Password Security, passwd
Good Password Criteria, examining
/etc/passwd and /etc/group files
32notes File and Directory Security, chmod, umask
Permission String of ls -l output,
Changing mode specifications,
Command examples
33notes Controlling File and Directory Access
table
34notes A Permissions Exercise
35notes Permissions Command Summary chown, chgrp
Questions? Robert Katz: rkatz@ned.highline.edu
Last Update July 9, 2002