[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] != (not equal operator) ! (NOT operator) in filename globbing in test command " (double quote) # (hash mark) as comment in script as root user prompt 2nd as RPM progress mark $ (dollar sign) as user prompt 2nd preceding shell variable $# variable $$ variable $* variable $? variable 2nd $@ variable $0 variable $1, ..., $9 variables - (hyphen) in file or directory names in keyboard accelerator & (ampersand) 2nd &> redirector > (greater-than sign) 2nd >> (redirector) < (less-than sign) 2nd << (redirector) '; (single quote) 2nd * (asterisk) . (dot) current directory preceding hidden file or directory name .. (two dots), parent directory / (slash) in file or directory name root directory 2nd 3rd 4th separating directories in pathname ; (semicolon) = (equal sign) in boot parameter definitions in test command ? (question mark) [] (square brackets) \ (backslash) 2nd 3rd \(...\) (grouping expressions) {} (curly braces) | (pipe redirector) 2nd 3rd ~ (tilde) 2nd ~+ (current working directory) ~- (previous working directory) 2> redirector 2>&1 redirector 2>> redirector 3D gaming 3D object manipulation, Draw application |