如何在bash中显示和刷新多行

本文介绍了如何在bash中显示和刷新多行的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在编写安装脚本，并希望在脚本进行时显示其状态.

I am writing a installation script and would like to display the status of the script as it progresses.

示例:

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.

推荐答案

此代码应为您提供想法:

This code should give you the idea:

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了解更多信息.要查看功能列表，请使用man terminfo

Use man tput for more info. To see the list of capabilities use man terminfo

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