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    Archive for March 30th, 2009

    Linux: how to remove trailing ^M (carriage return)

    30th March 2009

    Imagine you have some styles.css transferred from Win machine to Linux via FTP in binary mode instead of ASCII mode; then

    cat styles.css | tr -d "\r" > styles-nocarriage.css

    will create styles-nocarriage.css with ^M’s removed.

    Alternative syntax:

    tr -d "\r" < styles.css > styles-nocarriage.css

    Most editors have global replace features which allow to get rid of control characters using regular expressions (exact instructions are editor-specific).

    For multiple files, try this:

    for f
    do
    mv $f ${f}~ && tr -d "\r" <${f}~ >$f
    rm ${f}~
    done

    Save this shell script as a file (e.g. dos2unix.sh), then do ./dos2unix.sh . This script accepts wildcards (e.g. ./dos2unix.sh *.php), so be careful!

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    Posted in *nix, how-to, Notepad | 3 Comments »