进入X后的注销命令

代码:

#!/bin/bash
# Program:
#    This program shows the user's choice
# History:
# 2005/08/25   VBird   First release
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH

read -p "Please input (Y/N): " yn
[ "$yn" == "Y" -o "$yn" == "y" ] && echo "OK, continue" && exit 0
[ "$yn" == "N" -o "$yn" == "n" ] && echo "Oh, interrupt!" && exit 0
echo "I don't know what your choice is" && exit 0

代码:

chmod +x f.sh
./f.sh

引用:

set -x
....
set +x