On 02/24/2012 12:33 PM, Ondrej Vasik wrote: >> Sorry, I don't follow. If I have a decimal mode 'mode' in a script, >> then this: >> >> chmod @$(printf %o $mode) DIR >> >> is easier and simpler than this: >> >> chmod $(printf %5.5o $mode) DIR >> >> The "5.5o" is tricky: Why *two* "5"s?
By that argument, this is also equally simple: chmod 0000$(printf %o $mode) DIR >> and who can remember which "5" is really needed, and why, >> right off the bat? and remember why "5", and not "4" or "6"? >> >> The "@" is simple. s/@/0000/, and you have your distro-agnostic prefix. > > Yes, but `chmod @755 DIR' approach will not let you to write a script > which will work without modification on RHEL-4,RHEL-5 and RHEL-6 > machine... which is not the case with fully octal mode. That's what I'm > trying to say with "you still have octal digit". This %5.5o was more > about "easy" change to their script which will allow them to use one > script on everything again... > This kind of approach (one script for more systems) is very common in > enterprise area - and without possibility of doing that, requester will > not be fine with the solution. And it's arguments like that why I still think multiple leading zeros is better than any other prefix. -- Eric Blake ebl...@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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