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In this article I’ll show you a more complex script than the script I have shown in the article dos2unix bash script. This new script allow you to convert more than one file at the same time.

Vim (vi improved) provides a rapid way to change the format from dos to unix and viceversa.

After you have opened your text file, just type the following command in vim:

:set fileformat=unix

to change the format to unix, or type:

:set fileformat=dos

In this article I will show you a short bash script that will do a dos2unix text file conversion.

1:   #!/bin/bash
2:   cat $1|tr -d '\015'

After dos2unix using vim, here is dos2unix using sed

in bash you could type the following command:

# sed 's/^M$//' input.txt > output.txt

or  you can convert UNIX to DOS by typing the following command:

# sed 's/$'"/`echo \\\r`/" input.txt > output.txt

Often I need to translate source code from dos/windows format to UNIX format, MS-DOS and WINDOWS use a <carriage return>-<line feed> combination to represent end of line char while UNIX uses only a <line feed>.