Let's start our activity as follows:
- Open a terminal and create a script called select_menu.sh with the following contents:
#!/bin/bashTITLE="Select file menu"PROMPT="Pick a task:"OPTIONS=("list" "delete" "modify" "create")function list_files() { PS3="Choose a file from the list or type \"back\" to go back to the main: " select OPT in *; do if [[ $REPLY -le ${#OPT[@]} ]]; then if [[ "$REPLY" == "back" ]]; then return fi echo "$OPT was selected" else list_files fi done}function main_menu() { echo "${TITLE}" PS3="${PROMPT} " select OPT in "${OPTIONS[@]}" "quit"; do case "$REPLY" in 1 ) # List list_files main_menu # Recursive call to regenerate the menu ;; 2 ) echo "not used" ;; 3 ) echo "not used" ;; 4 ) echo "not used" ...
