Sync directories from iMac & MacBook . What is the recommended method? I like to sync directories from my Imac &amp; MacBook . What is the recommended method?
Software to synchronize two directories (local/remote) I need software that would detect changes in directory (A) every 5 seconds or so and upload/delete changed files from/at (B) remote directory.  I found non-commercial software, . I am wondering if there are any commercial alternatives?
What is the difference between object keys with quotes and without quotes? Is it wasteful to use a heating element, instead of doing useful work? Consider a computer CPU consuming electrical energy to perform calculations and consequently emitting heat.  Assumption: That a CPU consuming x Watts of power, emits the same amount of heat as an incandescent heating element which consumes the same amount of power.  The rest of the question assumes that this is true: the energy has to go somewhere, and I can't see that the outcome of the calculations counts as "somewhere".  I've long repeated the claim that "wasteful" appliances such as incandescent lightbulbs, over-full kettles, computers left running, etc. are not wasting power if we make the assumptions:   the appliance is in a room which we aim to maintain at above a certain temperature, warmer than the external temperature (cf a home in winter) the room leaks heat to the outside faster than the "wasteful" appliances emit heat. the room contains an electric heater the electric heater is regulated by a thermostat   In these circumstances, I think (?), if a light bulb produces excess heat, its only effect is to cause the thermostat to switch off sooner, so what energy you've "wasted" in the light bulb, is "saved" at the heater.  I don't think that's controversial.  But my question is:   If a CPU does useful work, and emits all the input energy as heat as a side effect But a heating element emits the same heat, without doing useful work Is it therefore wasteful to use heating elements? Is it more efficient to (for example) run  on a CPU, to get "free" computation as a side-effect of heating?   One reason to heat a room with a heating element, rather than with CPUs, is that the heating element is much cheaper to produce. But ignoring the initial cost of the hardware, would a "heater" made out of 20 CPUs, each running at full capacity and consuming 50W each, output less thermal heat than a 1KW element that does nothing else useful?  To be useful, of course, the CPUs would need to output the result of their computations, which would account for a tiny amount of energy. Let's assume that's negligible.  I'm sure there's a flaw in there somewhere; probably that the assumption above is false. What have I missed? In Windows, 'removable' drives cannot be partitioned, without the partitions not appearing and receiving drive letters, apart from the first partition.  Partitioned flash drives work fine in Linux.  What I want to do is partition a 8GB flash drive into two, with the first partition containing various boot disc images, which can be selected to boot from, and have various portable apps, documentation, utilities, scripts, etc, on the other partition.  I currently do this using two separate flash drives, but I want to be able to use a single flash drive for everything, which I keep on my keyring.  It is not possible to do this without having at least two partitions, as the ISO boot selector for the boot disc images will not work otherwise.  I know there is a method where you can flip a bit, using Lexar's USB Format Tool, which fools Windows into thinking that the partitions are on a fixed hard drive.  However, this apparently makes it difficult to eject the flash drive.  Flash drives with  from SanDisk had two partitions, presenting itself to the host system as a USB hub with a CD drive and standard USB mass storage device attached.  This is what I would like to emulate, if possible. How to show every field is a Euclidean Domain. I'm having trouble proving this. This is what I have so far:  Let $F$ be a field. Let $v(x) \rightarrow 1$ for all $x$ not equal to $0$.  So if we let $x$ be in $F$ where $x$ not zero then we can write $x$ as: $x=qy+r$ for some $y$ in $F$. If $r$ not zero then $V(r)=1$.  Not sure what to do from here. I know eventually I'm supposed to get no remainder $(r=0)$ but I'm stuck at applying the definition and valuation map. How to urlencode data for curl command? Parsing Command Prompt Output I am retrieving disk information via JavaScript with the wmic statement, wmic logicaldisk get freespace,name,size,volumename, which produces the following output, but in a single string.    "FreeSpace      Name  Size           VolumeName  " "560232755200   C:    999526756352   System      " "999369699328   D:    999558213632   SSD         " "1511570386944  E:    8001545039872  Get         " "4620751712256  F:    8001545039872  BR          " "788449492992   G:    4000650883072  Seen        " "2296009408512  H:    4000768323584  Seen 2      " "3594248679424  I:    8001545039872  2160        " "3507750227968  J:    8001545039872  1080        " "945300619264   K:    999625322496   Trailers    "   I parse the above output with the following JavaScript.  window.onload = function(){   const cp = require('child_process')   let drives   cp.exec('wmic logicaldisk get freespace,name,size,volumename', (error, stdout)=&gt;{     drives = stdout.trim().split('\r\r\n')       .map(value =&gt; value.trim().split(/\s{2,0}/))       .slice(1)   }) }   That JavaScript already produces my desired output. It produces an array of nested arrays. Each row of information in the command prompt output corresponds to a nested array. Each nested array has four values that correspond to the originally queried data points.  [   ["560232439808",  "C:", "999526756352",  "System"  ]   ["999369699328",  "D:", "999558213632",  "SSD"     ]   ["1511570386944", "E:", "8001545039872", "Get"     ]   ["4620751712256", "F:", "8001545039872", "BR"      ]   ["788449492992",  "G:", "4000650883072", "Seen"    ]   ["2296009408512", "H:", "4000768323584", "Seen 2"  ]   ["3594248679424", "I:", "8001545039872", "2160"    ]   ["3507750227968", "J:", "8001545039872", "1080"    ]   ["945300619264",  "K:", "999625322496",  "Trailer" ] ]   I am wondering whether or not there is a way to similarly parse the information, but with command prompt instead? Will leaving corpses lying around upset my prisoners? I see questions/information online about how to get rid of corpses but I'm not sure what the consequences to having them lying around are.  I know that I can use a morgue to store them and that they will eventually be taken away in a hearse. However, I've always just left them lying around. This doesn't seem to have any obvious consequences.  Do they upset prisoners or staff (e.g. increasing the danger level beyond what death normally does)? Make them sick? Slow down pathing? Is this something that's not implemented yet or is leaving dead bodies all over the place meant to be completely fine?  The wiki's pages for  and  don't shed any light on this. All I'm finding is the how of getting rid of corpses/glitches related to it but not why it matters in the first place. All I've seen that's related is that apparently prisoners can loot guard corpses for keys, but there's no obvious consequences for prisoner corpses which are what I tend to end up with.  So why not just leave them in the corridors? Overleaf does not compile after using Biblatex Calculating frames per second in a game Capitalize and punctuate "let us continue this discussion in chat" Stack Exchange has a feature to help move extended discussions out of comments and into chat, but when you use it, it automatically writes the following message for you:  let us   Could we get the orthography fixed?  I'd like it to read:  Let us .  That's a capital letter at the beginning and a period at the end. In a world without air, I understand they definitely would. However, with drag taken into account, I think they wouldn't. Since the drag force varies proportional to the square of speed (ignoring the change in coefficient of drag with speed), wouldn't the total impulse due to drag on a bullet fired from a gun from a specific height horizontal to ground be higher than the total impulse on an identical bullet dropped from the same height with no horizontal velocity?  Also, when bullet spin is taken into account, the bullet fired from a gun should resist change in orientation; therefore, it should maintain a small but non-zero angle of attack, and also have a lift force, correct? How to handle a native OS (Ubuntu) file upload window in selenium webdriver with python? This is my first time here but I have already posted this question on SO. I keep getting solutions for Windows + Java and not for Linux or python for that matter.  I am using Selenium and Python to automate a file upload application for the past many hours but nothing helpful!   The HTML DOM structure for this file upload is an input tag with its type attribute value = 'file'. I know I can make use of the send_keys.   The problem is I am not supposed to use send_keys() (as per the question I am trying to solve). The assumption is there are other ways of doing it.  Can anyone suggest me alternative ways to upload the file? I do get solutions for windows but not for Linux(Ubuntu). I know there are applications/tools to automate GUI components like AutoIt but there is nothing for Linux close to AutoIt.  I can say I have done my homework to find a solution. Only after not finding anything useful, I am asking this question, please help! Print total free memory from `free -m` free -m currently puts out something like this.     I would like to know using grep/awk how we can get the total free amount. i.e. 9083 Does an adjective or longer modifier apply to both nouns when they are joined with 'and' [or 'or']? Can you grab the blue shirts and socks?   Is the above sentence stating that both the shirts and the socks are blue? Or only the shirts?  At this stage, I am leaning towards the earlier (only the shirts) — though writing "Can you grab the blue shirts and blue socks?" seems redundant. I don't quite understand the difference between /a/ and /æ/. Google gives the transcription for 'add' as /ad/, while Wiktionary returns /æd/.  Are these sounds actually distinct or is this just two different ways of writing the same one? What is the Taylor series of $$\ln \frac{1-x^2}{1+x^2}$$   ?   I started by evaluating the first derivatives but the more I go, the more complicated they are and I can't identify a pattern. Details on the Origin of Sting What's the single-word for "left or right handed"? 'Male'/'female' is to 'gender' as 'left-handed'/'right-handed 'is to...?  Is there a word to describe this? For example, if I ask a guy     What's your ____?   It should mean I'm asking whether he's left or right-handed.  Another example could be     Our designs are not biased  against your ____.   Basically, I'm looking for something that means the state of being left- or right-handed which could be used analogously as gender.  EDIT: Sorry for the delay in the edit, but I was tied up. There are some points I'd like to clarify:   I'm not looking for a way to paraphrase my questions. I'm looking for a single word. I know people normally ask something along the lines of "Are you left-handed or not?" People also ask "Are you afraid of the dark?" instead of "Are you scotophobiac?". The word for it,  still exists, right? It has been pointed out that I should go with Our designs are not biased against left-handed people as that is what I mean. But that is not necessarily what I mean.    For example, let's say there is a washbasin with the tap on the right. Clearly, it's biased against lefties. Sometimes, you come across a washbasin with a tap on the left. (The logic being: you use your left hand to turn the tap as your right one's dirty). But, your right hand might not always be dirty, in which case, it's biased against righties.  A washbasin with the tap on the center is, then, handedness-blind or chirality-blind, if you will. (I foresee that some would dwell on Our designs are symmetrical. Please don't.)  I'm looking for a term that would be applicable here, as well as in the 1st example.  My favorite so far is chirality, suggested by Dan Bron in a comment (with 25 upvotes!) But, I'm reluctant to use it because there's no hard proof it's used in that sense  If we are talking about male-female, gender works perfectly. What's your gender? and Our designs aren't biased against your gender. , both work perfectly here.  Sorry for the late edit again. If the consensus is that I rollback, I will. Let me know in the comments. Unable to access outside service from inside LAN I have a weird port forwarding problem. I tried to open my port 22 to the outside network. I was able to access it as long as I am not inside the LAN. I can access it from my office for example. But from within the LAN, I can access the port using the local ip, but I can't access the port using the external IP. It's as if the router is blocking the loopback. I've check all my router settings, turned off anything firewall/filtering related. Any ideas? How to open a folder in Finder by a single mouse click? (using Icon view) Is there a setting, key combination or similar to open a folder/subfolder in Finder with a single mouse click ?  I need a general solution which works on any folder in effort to minimize needless clicking ... that tiny triangle aside the folder icon will work yet its just too small and only appears using list view ... inspired by same behavior on osx inside a browser to hold down command key and single click a web link ... forcing users to double click is so 20th Century  Is there a way to enable this on macOS (High Sierra or higher)?  On ubuntu this single click preference is a simple setting ;-)