2007/06/03

noclobber / shell options / overwrite files


    set -o noclobber
    set -C (es equivalente al anterior)


overwrite: NOT ALLOWED

    % set -C
    % ll > 1
    bash: 1: cannot overwrite existing file
    % set | grep SHELLOPTS
    SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:moni


overwrite: ALLOWED

    % set +C
    % ll > 1
    %
    % set | grep SHELLOPTS
    SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:moni

No comments: