The only option --restrict
currently disable is the ability to spawn a subshell with the !
command when you are prompted to replace a tape in a multi-volume archive.
2005/12/06 New function. Disable '!' command if given --restrict option.
Reference: http://git.savannah.gnu.org/gitweb/?p=tar.git;a=commit;h=ffc4fb7bdd03d095c46233770eb1a40fcaa3999c