if user input number (bash) - Qiita

read -n 1 -p "Would you like to install 1. AAAA 2. BBBB 3. CCCC 4. DDDD Please select (1/2/3/4) " ans; echo " " case $ans in 1) echo "install AAAA";; 2) echo "install BBBB";; 3) echo "install CCCC";; 4) echo "install DDDD";; *) echo "Unknown" exit;; esac hoshina@hoshina-ThinkPad-X1-Carbon-7th:~$ bash if_input_number.sh Would you like to install 1. AAAA 2. BBBB 3. CCCC 4. DDDD Please select (1/2/3/