wait_for_user 练笔

 vi p150

1 #wait_for_user user [time]
2
3 wait_for_user () {
4 until who | grep "$1" > /dev/null
5 do
6 sleep ${2:-3}
7 echo "imasleep "
8 done
9 }
10

ohoh~

去掉行号 :set nonu

#wait_for_user user [time]

wait_for_user () {
until who | grep "$1" > /dev/null
do
sleep ${2:-3}
echo "imasleep "
done
}

 chmod +x p150

 . ./p150  (source一下)

可以调用函数了

wait_for_user root