Package supervisor on Ubuntu 16.04 is missing
"Unable to locate package" while trying to install packages with APT
How to change multiple file type associations on the Mac at once? I want to change my default media player in macOS.  (In my case, I want to change it to my own AppleScript-created instance of VLC that I exported as ‘VLC-New-Window.app’, which is scripted to  so that it doesn’t override the existing paused playlist or video file I want to keep in the background.)  It is very tedious to find an example of every file type I use VLC for (whether mkv, avi, mp4, m4v, m4a, m4b, mp3, flac, or m2ts), right-click on it, and manually set the new default program each time.  And honestly I’d like every audio or video file type that VLC can open to be applied here so that I never have to worry about this again.  Is there any method that can help automate this, or do this in batch? Etiquette, rules, or advice on which site to pose a question? (Or, why are there so many StackExchange sites?) Basically: I have a question I want to ask regarding using Apple's AppleScript/Objective-C bridge (Objective C wrapped in AppleScript, basically) to implement an HTML/WebKit-based pager (a drop-in for less, like vimpager) and a HTML-ized manpage writer, which should also be capable of rendering to PDF via pandoc/pdftex, etc.  Is this a:   Stack Overflow question? (C/Objective-C, APIs) Ask Different question? (AppleScript) Unix &amp; Linux question? (implementing a pager which is a drop-in for a *nix utility) TeX question? (PDF rendering) All of the above?   Where and how should I ask this, in order to increase the likelihood of the "right person" seeing it?    Edit: I believe this question was too hastily closed as a duplicate.  While the best answer to this question is indeed identical to answer to the other:     Ask the question on the site you think is most applicable. If ... it does not get any answer,   ask a moderator to migrate the question, or alternatively, delete it and re-ask it.   The so-called "duplicate" in question asks     Is cross-posting permitted on multiple Stack Exchange sites if the question is on topic?   whereas this question asks,     Where and how should I ask this [ question that is on topic on multiple Stack Exchange sites? ]     That is to say, if two similar but materially different questions have identical answers, it does not necessarily follow that the questions are likewise the same.  Calling them duplicate questions does a disservice to both and the site in general I think. Start a longtable in Latex at top of next page I want to use the longtable environment for a table. However, I do not know how to place it at the top of the next page, as I can do with the table environment. Do you know how to do it? Give us better search-by-score syntax tl;dr: Give the score search operator ability to change between greater than and less than.  I just noticed that searching for score:0 turns up only question with a score equal to 0. Searching for score:1 gives everything with a positive score. (&gt;=1) I can live with these. But here's the big one: score:-1. I would expect it to give all the negatively scored posts - there is a minus sign in there. But it doesn't. It gives all the posts &gt;=-1. Greater than? So, my  is that we get more granular search options for score. For example,  score:1 would show all posts with score == 1 score:1+ would show everything score &gt;= 1 score:0 would show all posts with score == 0 score:-1 would show everything score == -1 score:-1- would show al posts where score &lt;= -1  In short, the operator after the number would show which direction to go with the matching. A minus sign means less than, a plus sign means greater than. No sign means exact. I thought that there was no need to scan for viruses either in Ubuntu or any Linux distros until I found virus scanner packages clamtk and klamav in Ubuntu software center yesterday.  This leads to the following questions:   How do viruses differ between Linux and Windows? How do the strategies for protection differ between Linux and Windows? Should a virus scanner package be installed on my system? If so, which would be a better option? Is it possible to recover an email that has been clicked "delete forever" in the trash folder? Possible Duplicate:          If I am using the word model in the context of financial models and the UK, then which of these words should I use? Also, are there any key difference in the meanings of the two? By default after a new user signs up, a redirect to the home page happens.  But in such case I want to redirect such user to another page like node/35.  In this node/35 I then want to display some content. Can you add new statements to Python's syntax? Can you add new statements (like print, raise, with) to Python's syntax?  Say, to allow..  mystatement "Something"   Or,  new_if True:     print "example"   Not so much if you should, but rather if it's possible (short of modifying the python interpreters code) Setting environment variables for latex and bibtex in .bashrc Possible Duplicate:          I recently started using TeX to write journal articles. I use TeX Live version 2009-10 on a laptop running Ubuntu 10.10 (64-bit). I edit and compile the tex files using vim and vim-latexsuite.   Currently for each journal article I have all associated tex, bib, eps, etc. files in individual folders. I would like to simplify my life a bit and have a dedicated folder containing a "master" bib file - And maybe another folder for my custom style files.   My problem is that can't figure out how I should define the PATH, and other environment variables in my .bashrc file to find the necessary support files (e.g., the .bib file). Which variables do I need to set? PATH? MANPATH? TEXINPUTS? BIBINPUTS? Install windows 7 through virtual box I want to detect when someone is building a lever, then replace it with another lever that has the canplaceon tag so it can be placed on a redstone_lamp  How can I clear the crafting item and replace it with one that has a canplaceon tag? Using processing.runandload in QGIS 3 Is there a password manager for Ubuntu What is the most popular open source password manager which I can use on a Ubuntu machine or preferably across Ubuntu/Windows machines with some form of data compatibility. If there is a free web based version, that would be even more preferable. Transit Visa for Thailand Im an Indian citizen. Do I need a transit visa in Thailand while going to Angkor Wat from Kolkata (India), and can I stay in Thailand for two days on this transit visa? Associated elements in a ring Please help me to find elements $a,b$ in a ring $R$ such that $a\mid b$ and $b\mid a$, but there does not exist any unit $u$ in $R$ such that $a=ub$. Floating Objects and Weight The Situation:  A ball is placed in a beaker filled with water and floats. It is also attached to the bottom of the beaker via a string.   The Question:  The ball is attached to the beaker, thus making the ball and beaker (and string included) a system. However, it is floating. Does the ball add to the weight of the beaker? Allow a user to read some other users' home directories Any gotchas I should be aware of?  Can I store it in a text field, or do I need to use a blob? (I'm not overly familiar with either pickle or sqlite, so I wanted to make sure I'm barking up the right tree with some of my high-level design ideas.) Space of probability measures "complete"? (In the other sense)