tar xvf globpattern.tar 1.ls -d GLOB/gLob/*[[:upper:]] 2.ls -d GLOB/*[[:upper:]]* 3.ls -d GLOB/gLob/?[[:digit:]]* 4.ls -d GLOB/*[[:digit:]][[:digit:]]* II) 1.(man bash ligne3380) shopt [-pqsu] [-o] [optname ...] Toggle the values of settings controlling optional shell behavior. The settings can be either those listed below, or, if the -o option is used, those available with the -o option to the set builtin command. With no options, or with the -p option, a list of all settable options is dis‐ played, with an indication of whether or not each is set; if optnames are supplied, the output is restricted to those options. The -p option causes output to be displayed in a form that may be reused as input. Other options have the following meanings: -s Enable (set) each optname. -u Disable (unset) each optname. -q Suppresses normal output (quiet mode); the return status indicates whether the optname is set or unset. If multiple optname arguments are given with -q, the return status is zero if all optnames are enabled; non-zero otherwise. -o Restricts the values of optname to be those defined for the -o option to the set builtin. 2.shopt permet d'activer et desactiver des options du shell shopt nullglob --> permet de savoir si l'option nullglob est activé ou desactivé shopt -s nullglob --> permet d'activé l'option nullglob shopt -q nullglob --> permet de désactivé l'option nullglob l'option du shell "nullglob" fait sauter la sécurité lorsqu'elle est desactivé, le programme renvoie une erreur lorqu'il y en a une. lorsqu'elle est activé, le shell force l'execution