tag 21749 notabug thanks On 10/24/2015 04:36 AM, Andreas Kern wrote: > steps to reproduce > > run `printf --help` That's probably running your shell's builtin printf, rather than the one from coreutils. Try: env printf --help or /bin/printf --help and to see the difference, try: type printf > comment: > I checked it on ubuntu and on arch, both don't print the help. I checked > the source package on ubuntu and there is code for that in printf.c If you read the source code, you may also notice that coreutils' 'printf --help' includes this text: $ env printf --help | tail and all C format specifications ending with one of diouxXfeEgGcs, with ARGUMENTs converted to proper type first. Variable widths are handled. NOTE: your shell may have its own version of printf, which usually supersedes the version described here. Please refer to your shell's documentation for details about the options it supports. GNU coreutils online help: <http://www.gnu.org/software/coreutils/> For complete documentation, run: info coreutils 'printf invocation' As such, I'm closing this as not a bug, although you should feel free to make further comments. Also, future bash releases may be adding support for 'printf --help' with the bash builtin printf, to match the fact that ksh builtin printf already accepts that option; but that won't help for dash, which is Ubuntu's /bin/sh. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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