shell脚本学习总结04--终端信息的获取和设置

tput

tput 命令将通过 terminfo 数据库对您的终端会话进行初始化和操作。通过使用 tput，您可以更改几项终端功能，如移动或更改光标、更改文本属性，以及清除终端屏幕的特定区域。

文本属性

    tput Color Capabilities:  
      
    tput setab [0-7] – Set a background color using ANSI escape  
    tput setb [0-7] – Set a background color  
    tput setaf [0-7] – Set a foreground color using ANSI escape  
    tput setf [0-7] – Set a foreground color  
      
    Color Code for tput:  
      
    0 – Black  
    1 – Red  
    2 – Green  
    3 – Yellow  
    4 – Blue  
    5 – Magenta  
    6 – Cyan  
    7 – White  
      
    tput Text Mode Capabilities:  
      
    tput bold – Set bold mode  
    tput dim – turn on half-bright mode  
    tput smul – begin underline mode  
    tput rmul – exit underline mode  
    tput rev – Turn on reverse mode  
    tput smso – Enter standout mode (bold on rxvt)  
    tput rmso – Exit standout mode  
    tput sgr0 – Turn off all attributes  

 例一，使输出的字符串有颜色，底色，加粗

#!/bin/bash  

    printf $(tput setaf 2; tput bold)'color show

'$(tput sgr0)

    for((i=0; i<=7; i++)); do
        echo $(tput setaf $i)"show me the money"$(tput sgr0)  
    done

    printf '
'$(tput setaf 2; tput setab 0; tput bold)'background color show'$(tput sgr0)'

'

    for((i=0,j=7; i<=7; i++,j--)); do
        echo $(tput setaf $i; tput setab $j; tput bold)"show me the money"$(tput sgr0)  
    done

    exit 0

运行结果：

 例2，输出格式控制函数

#!/bin/bash  

    # $1 str       print string  
    # $2 color     0-7 设置颜色  
    # $3 bgcolor   0-7 设置背景颜色  
    # $4 bold      0-1 设置粗体  
    # $5 underline 0-1 设置下划线  

    function format_output(){
        str=$1
        color=$2
        bgcolor=$3
        bold=$4
        underline=$5
        normal=$(tput sgr0)

        case "$color" in
            0|1|2|3|4|5|6|7)
                setcolor=$(tput setaf $color;) ;;
            *)
                setcolor="" ;;
        esac

        case "$bgcolor" in
            0|1|2|3|4|5|6|7)
           0|1|2|3|4|5|6|7)
                setbgcolor=$(tput setab $bgcolor;) ;;
            *)
                setbgcolor="" ;;
        esac

        if [ "$bold" = "1" ]; then
            setbold=$(tput bold;)
        else
            setbold=""
        fi

        if [ "$underline" = "1" ]; then
            setunderline=$(tput smul;)
        else
            setunderline=""
        fi

        printf "$setcolor$setbgcolor$setbold$setunderline$str$normal
"
    }

    format_output "Yesterday Once More" 3 1 1 1

    exit 0

运行结果：

光标属性

tput clear # 清屏  
  
tput sc # 保存当前光标位置  
  
tput cup 10 13 # 将光标移动到 row col  
  
tput civis # 光标不可见  
  
tput cnorm # 光标可见  
  
tput rc # 显示输出  

例一

    #!/bin/bash  
    # clear the screen  
    tput clear  
    # Move cursor to screen location X,Y (top left is 0,0)  
    tput cup 3 15  
    # Set a foreground colour using ANSI escape  
    tput setaf 3  
    echo "XYX Corp LTD."  
    tput sgr0  
    tput cup 5 17  
    # Set reverse video mode  
    tput rev  
    echo "M A I N - M E N U"  
    tput sgr0  
    tput cup 7 15  
    echo "1. User Management"  
    tput cup 8 15  
    echo "2. Service Management"  
    tput cup 9 15  
    echo "3. Process Management"  
    tput cup 10 15  
    echo "4. Backup"  
    # Set bold mode  
    tput bold  
    tput cup 12 15  
    read -p "Enter your choice [1-4] " choice  
    tput clear  
    tput sgr0  
    tput rc   
    exit 0  

运行结果：

例2：

#/bin/bash
echo -n  Count:
tput sc
count=0
while true;do
if [ $count -lt 40 ];then
let let count++
sleep 1
tput rc
tput ed
echo -n $count;
else exit o
fi
done

运行结果：

1.获取终端的行数和列数

# tput cols
98
# tput lines
26

2. 移动光标

[root@IHS ~]# tput cup 10 0









[root@IHS ~]# 

stty

使输入的密码不在屏幕上显示

#/bin/bash
echo -e "Enter password:"
stty -echo
read passwd
stty echo