如何在bash中显示和刷新多行

我正在编写安装脚本,并希望在脚本进行过程中显示脚本的状态.

例：

var1="pending"
var2="pending"
var3="pending"

print_status () {
echo "Status of Item 1 is: "$var1""
echo "Status of Item 2 is: "$var2""
echo "Status of Item 3 is: "$var3""
}

code that does something and then refreshes the
output above as the status of each variable changes.

这段代码应该给你一个想法：

while :; do
    echo "$RANDOM"
    echo "$RANDOM"
    echo "$RANDOM"
    sleep 0.2
    tput cuu1 # move cursor up by one line
    tput el # clear the line
    tput cuu1
    tput el
    tput cuu1
    tput el
done

使用man tput获取更多信息.要查看功能列表,请使用man terminfo

原文地址：https://www.jb51.cc/bash/386966.html