linux命令行下文件名中有空格的处理方法
q：我在树莓派命令行模式下使用mplayer播放单首音乐，因为文件名中含有空格，提示不存在该文件，该如何解决？
[johnwick@raspberrypi~]$sudo mplayer me like yuh.mp3
mplayer2 2.0-728-g2c378c7-4+b1 (c) 2000-2017 mplayer team
cannot open file '/root/.mplayer/input.conf': no such file or directory
failed to open /root/.mplayer/input.conf.
cannot open file '/etc/mplayer/input.conf': no such file or directory
failed to open /etc/mplayer/input.conf.
playing me.
cannot open file 'me': no such file or directory
failed to open me.
playing like.
cannot open file 'like': no such file or directory
failed to open like.
playing yuh.mp3.
cannot open file 'yuh.mp3': no such file or directory
failed to open yuh.mp3.
a：mplayerh播放当前目录下单首歌曲的格式为： mplayer [文件名]，显然系统认为 me like yuh.mp3 是三个独立文件
解决办法：①使用引号（英文输入法下）将文件名全部包含: mplayer "me like yuh.mp3"
方法②空格前使用连接符号"\" : mplayer me\ like\ yuh.mp3 “\”告诉系统后面跟着的字符为原意，不是命令
完毕。