Anchor(faq52)

How do I convert a file from DOS format to UNIX format (remove CRs from CR-LF line terminators)?

All these are from the [http://www.student.northpark.edu/pemente/sed/sed1line.txt sed one-liners page]:

sed 's/.$//' dosfile              # assumes that all lines end with CR/LF
sed 's/^M$//' dosfile             # in bash/tcsh, press Ctrl-V then Ctrl-M
sed 's/\x0D$//' dosfile           # GNUism - does not work with Unix sed!

If you want to remove all CRs regardless of whether they are at the end of a line, you can use tr:

tr -d '\r' < dosfile

If you want to use the second sed example above, but without embedding a literal CR into your script:

sed $'s/\r$//' dosfile            # BASH only

Some distributions have a dos2unix command which can do this. In vim, you can use :set fileformat=unix to do it.