On 06/23/2010 07:01 PM, Andres P wrote: > On Wed, Jun 23, 2010 at 8:23 PM, Peng Yu <pengyu...@gmail.com> wrote: >> Why printf is better than echo? Is this because printf is more robust than >> echo? > > Because if a string that is to be printed happens to be an echo flag, such > as -n or -e, there's no straight forward way of escaping it such as > with printf %s.
And because if a string to be printed contains a backslash, behavior differs wildly between shells on whether echo prints the backslash literally or treats it as an escape, whereas with printf the behavior is consistent. And because POSIX says so. -- Eric Blake ebl...@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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