NAME
    dos2unix - DOS/Mac to Unix and vice versa text file format converter

SYNOPSIS
        dos2unix [options] [FILE ...] [-n INFILE OUTFILE ...]
        unix2dos [options] [FILE ...] [-n INFILE OUTFILE ...]

DESCRIPTION
    The Dos2unix package includes utilities "dos2unix" and "unix2dos" to
    convert plain text files in DOS or Mac format to Unix format and vice
    versa.

    In DOS/Windows text files a line break, also known as newline, is a
    combination of two characters: a Carriage Return (CR) followed by a Line
    Feed (LF). In Unix text files a line break is a single character: the
    Line Feed (LF). In Mac text files, prior to Mac OS X, a line break was
    single Carriage Return (CR) character. Nowadays Mac OS uses Unix style
    (LF) line breaks.

    Binary files are automatically skipped, unless conversion is forced.

    Non-regular files, such as directories and FIFOs, are automatically
    skipped.

    Symbolic links and their targets are by default kept untouched. Symbolic
    links can optionally be replaced, or the output can be written to the
    symbolic link target. Symbolic links on Windows are not supported.
    Windows symbolic links always replaced, keeping the targets unchanged.

    Dos2unix was modelled after dos2unix under SunOS/Solaris and has similar
    conversion modes.

OPTIONS
    --  Treat all following options as file names. Use this option if you
        want to convert files whose names start with a dash. For instance to
        convert a file named "-foo", you can use this command:

            dos2unix -- -foo

        Or in new file mode:

            dos2unix -n -- -foo out.txt

    -ascii
        Convert only line breaks. This is the default conversion mode.

    -iso
        Conversion between DOS and ISO-8859-1 character set. See also
        section CONVERSION MODES.

    -1252
        Use Windows code page 1252 (Western European).

    -437
        Use DOS code page 437 (US). This is the default code page used for
        ISO conversion.

    -850
        Use DOS code page 850 (Western European).

    -860
        Use DOS code page 860 (Portuguese).

    -863
        Use DOS code page 863 (French Canadian).

    -865
        Use DOS code page 865 (Nordic).

    -7  Convert 8 bit characters to 7 bit space.

    -c, --convmode CONVMODE
        Set conversion mode. Where CONVMODE is one of: *ascii*, *7bit*,
        *iso*, *mac* with ascii being the default.

    -f, --force
        Force conversion of binary files.

    -h, --help
        Display help and exit.

    -k, --keepdate
        Keep the date stamp of output file same as input file.

    -L, --license
        Display program's license.

    -l, --newline
        Add additional newline.

        dos2unix: Only DOS line breaks are changed to two Unix line breaks.
        In Mac mode only Mac line breaks are changed to two Unix line
        breaks.

        unix2dos: Only Unix line breaks are changed to two DOS line breaks.
        In Mac mode Unix line breaks are changed to two Mac line breaks.

    -n, --newfile INFILE OUTFILE ...
        New file mode. Convert file INFILE and write output to file OUTFILE.
        File names must be given in pairs and wildcard names should *not* be
        used or you *will* lose your files.

    -o, --oldfile FILE ...
        Old file mode. Convert file FILE and overwrite output to it. The
        program default to run in this mode. Wildcard names may be used.

    -q, --quiet
        Quiet mode. Suppress all warnings and messages. The return value is
        zero. Except when wrong command-line options are used.

    -s, --safe
        Skip binary files (default).

    -F, --follow-symlink
        Follow symbolic links and convert the targets.

    -R, --replace-symlink
        Replace symbolic links with converted files (original target files
        remain unchanged).

    -S, --skip-symlink
        Keep symbolic links and targets unchanged (default).

    -V, --version
        Display version information and exit.

MAC MODE
    In normal mode line breaks are converted from DOS to Unix and vice
    versa. Mac line breaks are not converted.

    In Mac mode line breaks are converted from Mac to Unix and vice versa.
    DOS line breaks are not changed.

    To run in Mac mode use the command-line option "-c mac" or use the
    commands "mac2unix" or "unix2mac".

CONVERSION MODES
    Conversion modes *ascii*, *7bit*, and *iso* are similar to those of
    dos2unix/unix2dos under SunOS/Solaris.

    ascii
        In mode "ascii" only line breaks are converted. This is the default
        conversion mode.

        Although the name of this mode is ASCII, which is a 7 bit standard,
        the actual mode is 8 bit. Use always this mode when converting
        Unicode UTF-8 files.

    7bit
        In this mode all 8 bit non-ASCII characters (with values from 128 to
        255) are converted to a 7 bit space.

    iso Characters are converted between a DOS character set (code page) and
        ISO character set ISO-8859-1 (Latin-1) on Unix. DOS characters
        without ISO-8859-1 equivalent, for which conversion is not possible,
        are converted to a dot. The same counts for ISO-8859-1 characters
        without DOS counterpart.

        When only option "-iso" is used dos2unix will try to determine the
        active code page. When this is not possible dos2unix will use
        default code page CP437, which is mainly used in the USA. To force a
        specific code page use options -437 (US), -850 (Western European),
        -860 (Portuguese), -863 (French Canadian), or -865 (Nordic). Windows
        code page CP1252 (Western European) is also supported with option
        -1252. For other code pages use dos2unix in combination with
        iconv(1). Iconv can convert between a long list of character
        encodings.

        Some examples:

        Convert from DOS default code page to Unix Latin-1

            dos2unix -iso -n in.txt out.txt

        Convert from DOS CP850 to Unix Latin-1

            dos2unix -850 -n in.txt out.txt

        Convert from Windows CP1252 to Unix Latin-1

            dos2unix -1252 -n in.txt out.txt

        Convert from Windows CP1252 to Unix UTF-8 (Unicode)

            iconv -f CP1252 -t UTF-8 in.txt | dos2unix > out.txt

        Convert from Windows UTF-16 (Unicode) to Unix UTF-8 (Unicode)

            iconv -f UTF-16 -t UTF-8 in.txt | dos2unix > out.txt

        Convert from Unix Latin-1 to DOS default code page.

            unix2dos -iso -n in.txt out.txt

        Convert from Unix Latin-1 to DOS CP850

            unix2dos -850 -n in.txt out.txt

        Convert from Unix Latin-1 to Windows CP1252

            unix2dos -1252 -n in.txt out.txt

        Convert from Unix UTF-8 (Unicode) to Windows CP1252

            unix2dos < in.txt | iconv -f UTF-8 -t CP1252 > out.txt

        Convert from Unix UTF-8 (Unicode) to Windows UTF-16 (Unicode)

            unix2dos < in.txt | iconv -f UTF-8 -t UTF-16 > out.txt

        See also <http://czyborra.com/charsets/codepages.html> and
        <http://czyborra.com/charsets/iso8859.html>.

UNICODE
    There exist different Unicode encodings. On Unix/Linux Unicode files are
    mostly encoded in UTF-8 encoding. UTF-8 is ASCII compatible. UTF-8 files
    can have DOS, Unix or Mac line breaks. It is safe to run
    dos2unix/unix2dos on UTF-8 encoded files. On Windows mostly UTF-16
    encoding is used for Unicode files. Dos2unix/unix2dos should not be run
    on UTF-16 files. UTF-16 files are automatically skipped, because they
    are considered binary.

EXAMPLES
    Read input from 'stdin' and write output to 'stdout'.

        dos2unix
        dos2unix -l -c mac

    Convert and replace a.txt. Convert and replace b.txt.

        dos2unix a.txt b.txt
        dos2unix -o a.txt b.txt

    Convert and replace a.txt in ascii conversion mode.

        dos2unix a.txt

    Convert and replace a.txt in ascii conversion mode. Convert and replace
    b.txt in 7bit conversion mode.

        dos2unix a.txt -c 7bit b.txt
        dos2unix -c ascii a.txt -c 7bit b.txt
        dos2unix -ascii a.txt -7 b.txt

    Convert a.txt from Mac to Unix format.

        dos2unix -c mac a.txt
        mac2unix a.txt

    Convert a.txt from Unix to Mac format.

        unix2dos -c mac a.txt
        unix2mac a.txt

    Convert and replace a.txt while keeping original date stamp.

        dos2unix -k a.txt
        dos2unix -k -o a.txt

    Convert a.txt and write to e.txt.

        dos2unix -n a.txt e.txt

    Convert a.txt and write to e.txt, keep date stamp of e.txt same as
    a.txt.

        dos2unix -k -n a.txt e.txt

    Convert and replace a.txt. Convert b.txt and write to e.txt.

        dos2unix a.txt -n b.txt e.txt
        dos2unix -o a.txt -n b.txt e.txt

    Convert c.txt and write to e.txt. Convert and replace a.txt. Convert and
    replace b.txt. Convert d.txt and write to f.txt.

        dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

LOCALIZATION
    LANG
        The primary language is selected with the environment variable LANG.
        The LANG variable consists out of several parts. The first part is
        in small letters the language code. The second is optional and is
        the country code in capital letters, preceded with an underscore.
        There is also an optional third part: character encoding, preceded
        with a dot. A few examples for POSIX standard type shells:

            export LANG=nl               Dutch
            export LANG=nl_NL            Dutch, The Netherlands
            export LANG=nl_BE            Dutch, Belgium
            export LANG=es_ES            Spanish, Spain
            export LANG=es_MX            Spanish, Mexico
            export LANG=en_US.iso88591   English, USA, Latin-1 encoding
            export LANG=en_GB.UTF-8      English, UK, UTF-8 encoding

        For a complete list of language and country codes see the gettext
        manual:
        <http://www.gnu.org/software/gettext/manual/gettext.html#Language-Co
        des>

        On Unix systems you can use to command locale(1) to get locale
        specific information.

    LANGUAGE
        With the LANGUAGE environment variable you can specify a priority
        list of languages, separated by colons. Dos2unix gives preference to
        LANGUAGE over LANG. For instance, first Dutch and then German:
        "LANGUAGE=nl:de". You have to first enable localization, by setting
        LANG (or LC_ALL) to a value other than "C", before you can use a
        language priority list through the LANGUAGE variable. See also the
        gettext manual:
        <http://www.gnu.org/software/gettext/manual/gettext.html#The-LANGUAG
        E-variable>

        If you select a language which is not available you will get the
        standard English messages.

    DOS2UNIX_LOCALEDIR
        With the environment variable DOS2UNIX_LOCALEDIR the LOCALEDIR set
        during compilation can be overruled. LOCALEDIR is used to find the
        language files. The GNU default value is "/usr/local/share/locale".
        Option --version will display the LOCALEDIR that is used.

        Example (POSIX shell):

            export DOS2UNIX_LOCALEDIR=$HOME/share/locale

RETURN VALUE
    On success, zero is returned. When a system error occurs the system
    error will be returned. For other errors 1 is returned.

    The return value is always zero in quiet mode, except when wrong
    command-line options are used.

STANDARDS
    http://en.wikipedia.org/wiki/Text_file
    http://en.wikipedia.org/wiki/Carriage_return
    http://en.wikipedia.org/wiki/Newline

AUTHORS
    Benjamin Lin - <blin@socs.uts.edu.au> Bernd Johannes Wuebben (mac2unix
    mode) - <wuebben@kde.org>, Christian Wurll (add extra newline) -
    <wurll@ira.uka.de>, Erwin Waterlander - <waterlan@xs4all.nl>
    (Maintainer)

    Project page: <http://waterlan.home.xs4all.nl/dos2unix.html>

    SourceForge page: <http://sourceforge.net/projects/dos2unix/>

    Freecode: <http://freecode.com/projects/dos2unix>

SEE ALSO
    file(1) iconv(1)

