dos2unix command converts files using the DOS extended character set to their ISO standard counterparts. If dosfile and unixfile are the same, the file is overwritten after the conversion is done.
dos2unix Command Options
| Option | Description |
| -cmode, –convmodemode | Set the conversion mode to mode. Possible values are ASCII, 7bit ISO, and Mac. The default is ASCII. |
| -h,–help | Print a command-line summary and exit. |
| -k, –keepdate | Make the modification date of the output file be the same as that of the input file. |
| -ninfile outfile …, –newfileinfile outfile … | New file mode. Filenames must be provided in pairs: the first one is the input file, the second is the output file. |
| -ofile…;–oldfilefile… | Old file mode. Each input file in converted in place. This is the default. |
| -q, –quiet | Do not print any warnings or messages. |
| -V, –version | Print version information and exit. |
If you encounter the below error while running dos2unix command:
dos2unix: command not found
you may try installing the dos2unix as shown below as per your choice of distribution:
| Distribution | Command |
|---|---|
| OS X | brew install dos2unix |
| Debian | apt-get install dos2unix |
| Ubuntu | apt-get install dos2unix |
| Alpine | apk add dos2unix |
| Arch Linux | pacman -S dos2unix |
| Kali Linux | apt-get install dos2unix |
| CentOS | yum install dos2unix |
| Fedora | dnf install dos2unix |
| Raspbian | apt-get install dos2unix |
dos2unix Command Examples
1. Change the line endings of a file:
$ dos2unix filename
2. Create a copy with Unix-style line endings:
$ dos2unix -n filename new_filename