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 "\r%s" $i
sleep 0.2
done
done &
bgpid=$!
tmp="`bash -c \"$@\"`"
kill $bgpid
printf "\r%s\n" "$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 $i ('-','\\','|','/'){
printf("\r%s",$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;
假如该perl文件名为mygif.pl,用法:
./mygif "sleep 3;echo haha"
./mygif "service mysql start"
./mygif "service mysql stop"