You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.1 KiB
35 lines
1.1 KiB
2 years ago
|
#!/bin/sh
|
||
|
|
|
||
|
|
# Define ask_yn, which asks a yes or no question and outputs the result as 1 for Yes and 0 for No.
|
||
|
|
# Takes two arguments:
|
||
|
|
# $1: The question to be asked.
|
||
|
|
# $2: The default answer, either "y" or "n".
|
||
|
|
|
||
|
|
ask_yn() {
|
||
|
|
question=$1
|
||
|
|
default_answer=$2
|
||
|
|
|
||
|
|
# Capitalize the default option correctly
|
||
|
|
if [ "$default_answer" = "n" ] || [ "$default_answer" = "N" ]; then
|
||
|
|
prompt="${question} (y/N): "
|
||
|
|
else
|
||
|
|
prompt="${question} (Y/n): "
|
||
|
|
fi
|
||
|
|
|
||
|
|
while true; do
|
||
|
|
printf "%s" "$prompt"
|
||
|
|
STTY_CONFIG=$(stty -g) # Save current stty config
|
||
|
|
stty raw -echo # Disable echo
|
||
|
|
ANSWER=$(head -c 1) # Scrape terminal input
|
||
|
|
stty $STTY_CONFIG # Restore stty config
|
||
|
|
|
||
|
|
case $ANSWER in
|
||
|
|
[Yy] ) echo "Y"; exit 1;; # Yes: exit with 1
|
||
|
|
[Nn] ) echo "N"; exit 0;; # No: exit with 0
|
||
|
|
"" ) if [ "$default_answer" = "n" ] || [ "$default_answer" = "N" ]; then echo "N"; exit 0; else echo "Y"; exit 1; fi;; # Default: exit with the default value
|
||
|
|
* ) printf "\nPlease answer Yes or No.\n";;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
ask_yn "$@"
|