正确的换行符让Linux和Windows愉快的玩耍

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  • Madman
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Linux系统转换文本文件的换行符-min.png

Synopsis: 不同操作系统中的换行符标志不一样,在 ASCII 编码中以 LF (NL line feed, new line) 换行键和 CR (carriage return) 回车键来控制文本换行,即我们经常说的 \n 和 \r。Windows下面保存的文本文件默认换行符是 CRLF,而 Linux 是 LF,所以 Windows 下面的文件放到 Linux 系统中无法被打开,本文介绍一些常用方法来查看当前文件使用的是哪种文本换行符,以及如何进行转换

1. 换行符

不同操作系统中的换行符标志不一样,在ASCII编码中以LF (NL line feed, new line)换行键CR (carriage return)回车键来控制文本换行,即我们经常说的\n\r

  • Unix和类Unix(如Linux): \n
  • Windows(MS-DOS): \r\n
  • Mac OS X: \n
  • Mac OS 9: \r

Windows文本在Linux中无法执行:

使用Windows系统中Sublime Text 3编辑器写的脚本传输到Linux中(不是复制内容),导致脚本无法运行

[root@CentOS ~]$ ./test.sh 
-bash: ./test.sh: /bin/bash^M: bad interpreter: No such file or directory

2. Linux查看文本换行符

2.1 cat命令

使用选项-A来显示换行符

[root@CentOS ~]$ cat -A test.sh 
#!/bin/bash^M$
# Author: Madman^M$
# Date: 2017/03/06^M$
# Email: wangy8961@163.com^M$
# Version: 1.0^M$
^M$
echo "Test shell file"^M$

2.2 vi/vim命令

使用选项-b以Binary mode打开文件,来显示换行符

[root@CentOS ~]$ vim -b test.sh 

#!/bin/bash^M
# Author: Madman^M
# Date: 2017/03/06^M
# Email: wangy8961@163.com^M
# Version: 1.0^M
^M
echo 
                                
                            
分类: Linux
标签: cat CRLF dos2unix LF tr vim sed
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