在字符控制台里,锁定控制台,可以起到保护系统不被他人乱动的作用,请指教!
代码:
#!/bin/ksh
#scriptname:locktty
#writed by :javalee
#script start...
reset;clear #清除屏幕
info="System will be locked!!! Press Waitting....."
print "\n\n\n\n\n\n\n"
for i in 9 8 7 6 5 4 3 2 1 0
do
print -n " \a$info$i\r"
sleep 1
done
clear
#加上这个倒记时的小东东,;)
trapper () { #建立个函数
trap ' ' 2 3 20 #忽略CTRL+C CTRL+\ CTRL+Z信号
}
while : #进入死循环
do
trapper #调用函数
print "\n\n\n\n\n\n\n\n\t\t\tPlease enter unlock code:"
stty -echo #屏蔽输入的字符
read input
case $input in
123)
print "\t\t Hello $USER,Today is $(date +%T)\n"
stty echo
break ;; #输入正确,挑出循环回到命令行
*)
clear
continue ;; #否则,继续循环
esac
done
#script over |