2.3 Class content

• History and importance of UNIX
• Logging on/off
  .profile, .cshrc, .login, .logoff
• Passwords, security, file protection
  passwd
• Regular expressions and extended regular expressions
  grep, egrep, ex, vi, emacs, awk, perl
• Utilities
  cat, less, more, head, tail, ls, cd, mkdir, rmdir, pwd, who, w, cp, ln, mv, rm, compress, gzip, gunzip, cut, lpr, lpq, lpc, lprm, date, cal, wc, echo, du, df, test, expr, man, info, chmod, chown, bc, dc, split, paste, file
• Editors
  ex, ed, vi, emacs, xedit, pico, .emacs, .exrc, sed
• File structure
  mount, umount, /dev, /etc/exports, /etc/fstab
• Shell & Shell scripts
  bourne (sh), "C" (csh), korn, bash, tcsh
  argument substitution, wildcards, meta characters, file name completion, and history
• Text formatting
  nroff & troff (manual pages) HTML (www)
• "C" programming & "C" language interface to UNIX OS
• Perl & CGI
• System administration, Internal structure
  /etc, /etc/passwd, ps, netstat, termcap, printcap, rc, rc.local, crack, shutdown, sync, run levels, disk partitions, sudo, su
• Communication
  Mail, pine, MH, talk, wall, write
• Internet TCP/IP
  ftp, telnet, finger, ping, nslookup, traceroute, httpd, ~/public_html