lsTo list content of directory without information about owner and group with chosen time format and grouping directories before files:
$ ls -go --time-style=+"%d.%m.%Y %H:%M:%S" --group-directories-first
Other useful options:
-a - show all
-tr - sort by time, most recent last
-Sr - sort by size, biggest last
-Z - display security context
-n - list numeric user and group IDs
To list directories only:
$ ls -d */
ls colors are defined in $HOME/.dircolors. Some nice color schemes can be found at dircolors-solarized.
System colors: Color cube, 6x6x6: Grayscale ramp:
xterm supports RGB colours by mapping to the nearest colour in the 256 palette. The color can be set via 38;2;$R:$G;$B