dos2unix and unix2dos
The utilities dos2unix and unix2dos are available for converting files from the Unix command line.
To convert a Windows file to a Unix file, enter:
dos2unix winfile.txt unixfile.txtTo convert a Unix file to Windows, enter:
unix2dos unixfile.txt winfile.txttr
You can use tr to remove all carriage returns and Ctrl-z ( ^Z ) characters from a Windows file:
tr -d '\15\32' < winfile.txt > unixfile.txtHowever, you cannot use tr to convert a document from Unix format to Windows.
awk
To use awk to convert a Windows file to Unix, enter:
awk '{ sub("\r$", ""); print }' winfile.txt > unixfile.txtTo convert a Unix file to Windows, enter:
awk 'sub("$", "\r")' unixfile.txt > winfile.txtOlder versions of awk do not include the sub function. In such cases, use the same command, but replace awk with gawk or nawk.
Perl
To convert a Windows text file to a Unix text file using Perl, enter:
perl -p -e 's/\r$//' < winfile.txt > unixfile.txtTo convert from a Unix text file to a Windows text file, enter:
perl -p -e 's/\n/\r\n/' < unixfile.txt > winfile.txtYou must use single quotation marks in either command line. This prevents your shell from trying to evaluate anything inside.
vi
In vi, you can remove carriage return ( ^M ) characters with the following command:
:1,$s/^M//gNote: To input the ^M character, press Ctrl-v , and then press Enter or return.
In vim, use :set ff=unix to convert to Unix; use :set ff=dos to convert to Windows.
