How do I convert DOS newlines CR/LF to Unix/Linux format?
To converts text files between DOS and Unix formats you need to use special utility called dos2unix. DOS text files traditionally have carriage return and line feed pairs as their newline characters while Unix text files have the line feed as their newline character.
Unix/Linux Vim
Command mode: set fileformat=unix
UNIX/Linux Commands
You can use the following tools:
- dos2unix (also known as fromdos) - converts text files from the DOS format to the Unix
format - unix2dos (also known as todos) - converts text files from the Unix format to the DOS format.
- sed - You can use sed command for same purpose
- tr command
- Perl one liner
Task: Convert DOS file to UNIX format
Type the following command to convert file called myfile.txt:$ dos2unix myfile.txt
However above command will not make a backup of original file myfile.txt. To make a backup of original file. The original file is renamed with the original filename and a .bak extension. Type the following command:$ dos2unix -b myfile.txt
Task: Convert UNIX file to DOS format
Type the following command to convert file called myfile.txt:$ unix2dos myfile.txt
$ unix2dos -b myfile.txt
Task: Convert Dos TO Unix Using tr command
tr -d '\r' < input.file > output.file
Task: Convert Dos TO Unix Using Perl One Liner
perl -pi -e 's/\r\n/\n/g' input.file
Task: Convert UNIX to DOS format using sed command
Type the following command if you are using bash shell:$ sed 's/$'"/`echo \\\r`/" input.txt > output.txt
Note: sed version may not work under different UNIX/Linux variant,refer your local sed man page for more info.
Task: Convert DOS newlines (CR/LF) to Unix format using sed command
If you are using BASH shell type the following command (press Ctrl-V then Ctrl-M to get pattern or special symbol)$ sed 's/^M$//' input.txt > output.txt
Note: sed version may not work under different UNIX/Linux variant, refer your local sed man page for more info.