Has any member here performed a software downgrade from the pre-installed Lion 10.7.2 to Snow leopard 10.6.8 on any late-2011 MacBook Pro (any size) and if it was successful or failed and what you found? Thank you.
I want to buy a new MacBook Pro, from Apple. However I want to run Snow Leopard instead of Lion.  I did some Google searches and found a few success stories of people who got SL to run on their early-2011 MBPs. I didn't find much of any experiences of people doing the same on a late-2011 MBP though, so I'm wondering (and really hoping!) if it's possible?
I accidently ran  sudo chmod 755 -R /   instead of  sudo chmod 755 -R ./   I stopped it after few seconds, but now there is some problems such as  sudo: must be setuid root   How can I revert permissions back? Where did the world go? I was playing on my main world when my laptop ran out of power.  I found a charger and woke it up, but Minecraft had crashed.  Now, it doesn't appear in the world selection screen!  I have verified that it still exists in the Minecraft folder, and the directory contents look to be in order.  Does Minecraft save an internal flag somewhere when it crashes hard?  If so, how do I reset it? Does C# have extension properties? Why is $\sqrt{-x}*\sqrt{-x}=-x?$ Script to determine if files are Images I would like to create a shell script that will check to make sure all files in a directory are image files.  We recently had an issue where a hacker was able to generate a file in a directory and mask it as a .jpg file. I would like to create a shell script to check all files in the directory to make sure they are real jpg, gif or png files. On Windows 10 Professional, with the November update (Build 10586, Version 1511) , is there any possibility to completely remove Windows Defender ?  I don't want to just disable Windows Defender.  I want to completely uninstall from my system. "Recent Badges" list is displayed without margins on "Home" page When the &quot;Hide Hot Network Questions&quot; preference is enabled (i.e. HNQ sidebar is hidden), we see &quot;Recent Tags&quot; and &quot;Recent Badges&quot; in the homepage instead of the HNQ. However, the &quot;Recent Badges&quot; list is displayed with no margins. ex.)   I think that the appropriate margins were set in the past. cf.) I've been wondering, what is the difference between seek and search? When should one be preferred over the other? Why does universal generalization work? 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I have created /Library/LaunchDaemons/org.macports.selfupdate.plist:   $ ls -l /Library/LaunchDaemons/org.macports.selfupdate.plist -rw-r--r--  1 root  wheel  669  8 Nov 12:49 /Library/LaunchDaemons/org.macports.selfupdate.plist   It has the following contents:   &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt; &lt;plist version="1.0"&gt; &lt;dict&gt; &lt;key&gt;Label&lt;/key&gt; &lt;string&gt;org.macports.selfupdate&lt;/string&gt; &lt;key&gt;ProgramArguments&lt;/key&gt; &lt;array&gt;     &lt;string&gt;/opt/local/bin/port&lt;/string&gt;     &lt;string&gt;selfupdate&lt;/string&gt; &lt;/array&gt; &lt;key&gt;StandardOutPath&lt;/key&gt; &lt;string&gt;/var/log/org.macports.selfupdate.log&lt;/string&gt; &lt;key&gt;StandardErrorPath&lt;/key&gt; &lt;string&gt;/var/log/org.macports.selfupdate.err&lt;/string&gt; &lt;key&gt;RunAtLoad&lt;/key&gt; &lt;true/&gt; &lt;key&gt;StartInterval&lt;/key&gt; &lt;integer&gt;604800&lt;/integer&gt;&lt;!-- 1 week --&gt; &lt;/dict&gt; &lt;/plist&gt;   I've loaded it and verified that it's loaded:  $ launchctl list | grep macports -   78  org.macports.selfupdate   But it doesn't look like it actually run.    $ port info wireshark Warning: port definitions are more than two weeks old, consider updating them by running 'port selfupdate'. wireshark @1.12.8_3 (net) ...   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(guides, how to's, status)    What has already been established is:   Apple does not support Linux and has no plans to.  provides some support, however it currently does not support music/video synchronization with devices &gt;iOS4. Go to  and scroll to the section titled "" to see if your device version is supported. Practical hyperparameter optimization: Random vs. grid search On the one side, the USA is just one country. Logic says it should be, then, singular, just like the United Kingdom is. Example:     The USA owns this domain.   On the other side, if I however expand "the USA" to "the United States of America", I'd tend towards using plural &mdash; the noun the verb agrees with, "States," is definitely plural. Example:     The United States of America own this domain. → The USA own this domain.   What form should I prefer? Using Unicode Zero Width Spaces allows all space comments Why are disabled apps still running? Numbering figures and tables by their section I am having trouble formatting my list of figures and list of tables.  Currently, my tex document is printing the list in the following manner:     1 Foreign Key Constraint Problem Due   to Improper Table Design. . . . 3      2 Application Flow of Territory   Maintenance Tool. . . . . . . . . . .   . . 4   But I want to number figures by their sections:     3.1.2 Foreign Key Constraint Problem Due to Improper Table Design I just did a clean install of 20.04 and I noticed that no key shortcuts for files manipulation work when my focus in on Desktop (not in Nautilus).   When I have copied a file to clipboard, I cannot Ctrl+V it to Desktop, when I click on a file on Desktop, I cannot Ctrl+C it, or I cannot Delete it with keys. Only ways to do it is either navigate to the Desktop folder in Nautilus, or right-click the file on the Desktop and copy/move to trash/paste...  Sorry if I'm missing something obvious, all the key shortcuts worked normally for me in 18.04.