I use an old server without dos2unix and I would like to convert windows files to unix files. I am unfortunately not the admin so I can't install dos2unix. The tr method seems to be the only one that works.

cp script _p4 && tr -d '\r' < _p4 > script && rm _p4

Are there any easier methods to do this? I have a really hard time either remembering this or searching for this.

  • dos2unix is a small and relatively self-contained binary. There's a sporting chance it will work on your server. If you have dos2unix installed on a machine with the same arch and OS (is this Linux?) then try copying it to your home directory and do ./dos2unix file_you_want_to_convert. Or, of course you could just download a suitable binary to the server directly. – Faheem Mitha Apr 28 '16 at 22:30

If you have GNU sed you can do this:

sed -i 's/\x0D$//' script

Where "x0D" is the ASCII code for \r.

  • \r is supported by sed, too. Why use harder-to-remember number when you can use simpler notation? – Alexander Batischev Apr 28 '16 at 22:17
  • I used to think that \r was not supported by all sed version, especially the GNU one. Things have changed, but I still use something which can be more portable to all sed version (maybe I'm wrong). – gapz Apr 28 '16 at 22:22
  • @gapz any idea why this one won't work sed -e '%s/^M//g' cookies sed: -e expression #1, char 1: unknown command: %' ` ? Is my sed to old? – cokedude Apr 28 '16 at 22:30
  • What are you trying to do with "%" ? Your are not in vim ;-). – gapz Apr 28 '16 at 22:36
  • Saw that on another page unix.stackexchange.com/questions/411/…. Couldn't get it to work so I asked my question here. – cokedude Apr 28 '16 at 23:05

You can always write a script:

for name in "$@"
    cp "$name" "$name"~ && tr -d '\r' < "$name"~ > "$name" && rm "$name"~

and name that dos2unix. No compiler is needed.


This command can be used to convert EOL characters without having dos2unix installed:

sed -i 's/.$//' script

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