shell脚本动画小工具

shell脚本动画小工具

看gif图:

shell脚本版

脚本内容如下:

#!/usr/bin/env bash

## ------------------------------------------------------------
## Author:博客园——骏马金龙
## shell scripts:http://www.cnblogs.com/f-ck-need-u/p/7048359.html
## ------------------------------------------------------------

## Usage:$0 "COMMAND"
## you must enclosing the COMMAND by double-quotes
## example1: $0 "sleep 3;echo haha"
## example2: $0 "service mysql start"

killmyself="pkill -13 -f `basename $0`"

trap "$killmyself" sigint

while true;do
    for i in '-' "\" '|' '/';do
        printf "
%s" $i
        sleep 0.2
    done
done &

bgpid=$!

tmp="`bash -c "$@"`"
kill $bgpid
printf "
%s
" "$tmp"
$killmyself

必须将待运行的命令放进引号中包围,并作为脚本的参数。

## example1: $0 "sleep 3;echo haha"
## example2: $0 "service mysql start"
## example3: $0 "service mysql stop"

perl版

下面是用perl写的,作用完全一样。将内容保存到一个文件中,赋予可执行权限即可。同样,待执行的命令需要使用双引号包围。

#!/usr/bin/env perl
use strict;
use warnings;

defined(my $pid = fork) or die "can't fork child: $!";

unless($pid){
    # child process
    select STDOUT; $| = 1;
    while(1){
        foreach my $i ('-','\','|','/'){
            printf("
%s",$i);
            select(undef,undef,undef,0.1)
        }
    }
}

my $var = `/bin/sh -c "@ARGV"`;
kill INT => $pid or die "Cannot signal to $pid with SIGINT: $!";
printf "
%s",$var;

假如该perl文件名为mygif.pl,用法:

./mygif "sleep 3;echo haha"
./mygif "service mysql start"
./mygif "service mysql stop"
原文地址:https://www.cnblogs.com/f-ck-need-u/p/9987052.html