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Robin H. Johnson wrote: |
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> On Mon, Jun 08, 2009 at 12:02:44AM +0200, Ulrich Mueller wrote: |
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>>>>>>> On Sun, 7 Jun 2009, Robin H Johnson wrote: |
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>>> 2. Right now, every init.d script that needs to detection should revbump |
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>>> and change to the following: |
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>>> [[ -f /lib/librc.so -o -f /etc/init.d/sysfs -o -f /libexec/rc/version ]] |
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>> Wasn't the convention for init scripts to use only single square |
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>> brackets, i.e. POSIX shell syntax? |
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> That was raised in the bug as well. My testing was with bash --posix, so |
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> if that doesn't implement POSIX correctly, then yes, we'd need to |
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> change. |
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> |
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> Roy: [[ or [? |
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|
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Entirely depends on system. |
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OpenRC uses /bin/sh to process the actual init script. We rely on |
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/bin/sh claiming POSIX compat [1]. On Gentoo Linux systems, this is |
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normally a link to bash, so you can use bashisms if you so wish. |
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|
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However, on Gentoo FreeBSD systems, or Gentoo Embedded systems that |
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predominately use busybox then the bashisms won't obviously work. So the |
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question becomes, does the init script developer want to support non |
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bash by default systems? |
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|
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Franky, I've given up on trying to enforce anything POSIX related over |
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something else (like say GNU or implementation extensions over an |
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accepted standard). I just don't care. I used to, but developer and user |
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backlash (see the archives) was just too much for me and was one of the |
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resaons why I retired from Gentoo. |
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|
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Just Do What The Fuck You Like, Just Don't Bug Me pretty much somes up |
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my attitude right now. Why do I have this attiude? Well, bug #175783 is |
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a very good example. It's over two years since I submitted replacement |
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scripts and did more besides. It's just like the courier-imap fiasco |
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when baselayout-1.12 was touted for stable, but this time I Just Don't Care. |
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But as you asked, here's what the good doc [1] has to say |
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|
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The following words may be recognized as reserved words on some |
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implementations (when none of the characters are quoted), causing |
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unspecified results: |
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[[ ]] function select |
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|
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In other words, I won/t make any claims whether [[ ]] works in OpenRC. |
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|
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Thanks |
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|
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Roy |
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|
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[1] http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html |
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