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在屏幕中间打印代码输出

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在屏幕中间打印代码输出

下面的代码将file在屏幕上逐字输出所有内容。例如：

Hello 将显示 1 秒然后消失。然后，句子中的下一个单词将出现 1 秒然后消失，依此类推。

我如何输出屏幕中间显示的内容？

awk '{i=1; while(i<=NF){ print $((i++)); system("sleep 1; clear") }}' file

答案1

尝试下面的脚本。它将检测每个输入单词的终端大小，因此如果您在运行时调整终端大小，它甚至会动态更新。

#!/usr/bin/env bash

## Change the input file to have one word per line
tr ' ' '\n' < "$1" | 
## Read each word
while read word
do
    ## Get the terminal's dimensions
    height=$(tput lines)
    width=$(tput cols)
    ## Clear the terminal
    clear

    ## Set the cursor to the middle of the terminal
    tput cup "$((height/2))" "$((width/2))"

    ## Print the word. I add a newline just to avoid the blinking cursor
    printf "%s\n" "$word"
    sleep 1
done

将其另存为~/bin/foo.sh，使其可执行（chmod a+x ~/bin/foo.sh），并将输入文件作为其第一个参数：

foo.sh file

答案2

这里有一个非常强大的 bash 脚本：

#!/bin/bash

## When the program is interrupted, call the cleanup function
trap "cleanup; exit" SIGHUP SIGINT SIGTERM

## Check if file exists
[ -f "$1" ] || { echo "File not found!"; exit; }

function cleanup() {
    ## Restores the screen content
    tput rmcup

    ## Makes the cursor visible again
    tput cvvis
}

## Saves the screen contents
tput smcup

## Loop over all words
while read line
do
    ## Gets terminal width and height
    height=$(tput lines)
    width=$(tput cols)

    ## Gets the length of the current word
    line_length=${#line}

    ## Clears the screen
    clear

    ## Puts the cursor on the middle of the terminal (a bit more to the left, to center the word)
    tput cup "$((height/2))" "$((($width-$line_length)/2))"

    ## Hides the cursor
    tput civis

    ## Prints the word
    printf "$line"

    ## Sleeps one second
    sleep 1

## Passes the words separated by a newline to the loop
done < <(tr ' ' '\n' < "$1")

## When the program ends, call the cleanup function
cleanup

答案3

bash 函数做同样的事情

mpt() { 
   clear ; 
   w=$(( `tput cols ` / 2 ));  
   h=$(( `tput lines` / 2 )); 
   tput cup $h;
   printf "%${w}s \n"  "$1"; tput cup $h;
   sleep 1;
   clear;  
}

进而

mpt "Text to show"

答案4

下面是类似于@Helio 的bash解决方案：

#!/usr/bin/env python
import fileinput
import signal
import sys
import time
from blessings import Terminal # $ pip install blessings

def signal_handler(*args):
    raise SystemExit

for signal_name in "SIGHUP SIGINT SIGTERM".split():
    signal.signal(getattr(signal, signal_name), signal_handler)

term = Terminal()
with term.hidden_cursor(), term.fullscreen():
    for line in fileinput.input(): # read from files on the command-line and/or stdin
        for word in line.split(): # whitespace-separated words
            # use up to date width/height (SIGWINCH support)
            with term.location((term.width - len(word)) // 2, term.height // 2):
                print(term.bold_white_on_black(word))
                time.sleep(1)
                print(term.clear)

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