shell腳本動畫小工具
看gif圖:
shell腳本版
腳本內容如下:
#!/usr/bin/env bash
## ------------------------------------------------------------
## Author:博客園——駿馬金龍
## 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 "\r%s" $i
sleep 0.2
done
done &
bgpid=$!
tmp="`bash -c \"$@\"`"
kill $bgpid
printf "\r%s\n" "$tmp"
$killmyself
必須將待運行的命令放進引號中包圍,並作為腳本的參數。
## example1: $0 "sleep 3;echo haha"
## example2: $0 "service mysql start"
## example3: $0 "service mysql stop"
perl版
下面是用perl寫的,作用完全一樣。將內容保存到一個文件中,賦予可執行權限即可。同樣,待執行的命令需要使用雙引號包圍。
#!/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 $i ('-','\\','|','/'){
printf("\r%s",$i);
select(undef,undef,undef,0.1)
}
}
}
my $var = `/bin/sh -c "@ARGV"`;
kill INT => $pid or die "Cannot signal to $pid with SIGINT: $!";
printf "\r%s",$var;
假如該perl文件名為mygif.pl,用法:
./mygif "sleep 3;echo haha"
./mygif "service mysql start"
./mygif "service mysql stop"