[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] ! escape sequence "" (quotes) around filenames with spaces around pathnames with spaces "d", indicating directory in listing "l", indicating link in listing # (hash mark), at end of prompt $ (dollar sign) at end of prompt 2nd command, vi $$ (dollar sign, double), PID of current shell % (percent sign) prompt & (ampersand), specifying background process > (greater-than symbol), sending output to file 2nd >> (greater-than symbol, double), as append redirection operator < ( less-than symbol), getting input from a file * (asterisk) in regular expressions indicating executable file wildcard - (dash) in command line indicating plain file in listing -- (dash, double) in command line . (dot), indicating working directory .. (dot dot), indicating parent directory .bashrc file .profile file . term files 2nd / (slash) in pathname indicating directory in listing indicating root directory 2nd starting pattern in vi 2nd /Users/Shared directory /Volumes directory 2nd 3rd : ( colon ) in filenames or directory names prompt for less command :q command, vi 2nd 3rd :q! command, vi :w command, vi 2nd :wq command, vi ; (semicolon), on command line ? (help) command, Pine ? (question mark) wildcard [] (square brackets) wildcards \ (backslash) before spaces in pathname prefacing spaces and special characters \$ escape sequence \@ escape sequence \A escape sequence \H escape sequence \h escape sequence \u escape sequence \w escape sequence \W escape sequence ^[ escape sequence ^G escape sequence (pipe operator) 2nd ~ (tilde), indicating home directory 0 command, vi 1 command, vi |