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.
In Unix, the shell is a program that interprets commands and acts as an intermediary between the user and the inner workings of the operating system.o Unix, the shell is just another program. For this reason, any program can be designated a login shell in /etc/shells. For example, some Emacs users pride themselves on never needing a traditional shell prompt.