So, a player who can jump 4 feet vertically will have a hang time of around a second, with half a second spent in the high part of the jump. Physics Of Basketball â Backspin. Backspin is used by players to improve their chances of getting the basketball into the net.
From Linux Shell Scripting Tutorial - A Beginner's handbook. The /etc/shells is a Linux / UNIX text file which contains the full pathnames of valid login shells. This file is used by various commands including chsh command.
1 The shell is a user program or it is an environment provided for user interaction. 2  It is a command language interpreter that executes commands read from the standard input device such as keyboard or from a file.  The shell gets started when you log in or open a console (terminal).