CS 160A Exit Skills:   Here is a list of some important concepts and tools from Intro to Linux/Unix (CS 160A).   I expect you will know most of the concepts  & be able to use most of the commands in each category.   If these are mostly unknown to you, then please take the corresponding class first. 

• Intro to Linux/Unix (CS 160A):
• how to use "ssh" to login to your student linux account on host: hills.ccsf.edu
• comfortable working at the linux/unix command line (i.e., typing in commands is not a problem)
  
• structure of unix -- kernel, shell, commands, utilities
• know that there can be differences in command names, arguments & pathnames between versions of linux & unix. 
• unix file structure -- absolute and relative pathnames, the difference between starting a command with "/" and "./"
  
• basic file and directory permissions - read, write, execute for file owner, group, other.  symbolic & numeric formats.
  
• basic file & directory-related commands, like:  pwd, cd, mkdir, rmdir, ls, ll, df, du, mv, rm, cat, ">", ">>"
  
• basic Unix commands and utilities, like:  grep, head, tail, cut, sort, find, who, ps, whereis, which, whoami, id
  
• basic regular expressions (asterisk, period, caret, dollar sign, square brackets, question mark)
• how to use pipes
• how to redirect standard output
• quotes:  the difference between single, double, and backquote
• variables -- how to set, use, and export,  at a minimum:  $HOME, $PATH, $TERM
  
• parts of  a unix account as stored in /etc/passwd -- username, password, uid, gid, real name, home directory, startup shell
• what is superuser, root, su -
  
• processes:  ps   (great if you also know:   ps -ef)
• how to view a text file a page at a time with "more"  (or "less")       and search through it with:  /pattern
  
• how to edit a text file with a text editor, like "pico" or "nano" (better if you know how to use the more powerful "vi" or "emacs" editors)