What is this process and how can I get rid of it? I ran antivirus etc but without any success. Terminating it in the activity monitor won't change anything.   Sampling process 416 for 3 seconds with 1 millisecond of run time between samples Sampling completed, processing symbols... Analysis of sampling usernoted (pid 416) every 1 millisecond Process:         usernoted [416] Path:            /usr/sbin/usernoted Load Address:    0x10ef1f000 Identifier:      usernoted Version:         845.40.3 Code Type:       X86-64 Parent Process:  ??? [1]  Date/Time:       2020-11-02 14:29:16.852 +0100 Launch Time:     2020-11-02 14:24:15.500 +0100 OS Version:      Mac OS X 10.15.7 (19H2) Report Version:  7 Analysis Tool:   /usr/bin/sample  Physical footprint:         11.4M Physical footprint (peak):  11.7M ----  Call graph:     2702 Thread_4148   DispatchQueue_1: com.apple.main-thread  (serial)     + 2702 start  (in libdyld.dylib) + 1  [0x7fff6eaa8cc9]     +   2702 ???  (in usernoted)  load address 0x10ef1f000 + 0x2cd5  [0x10ef21cd5]     +     2702 autoreleasepool&lt;A&gt;(invoking:)  (in libswiftObjectiveC.dylib) + 46  [0x7fff6e75cd8e]     +       2702 ???  (in usernoted)  load address 0x10ef1f000 + 0x3cce  [0x10ef22cce]     +         2702 CFRunLoopRun  (in CoreFoundation) + 40  [0x7fff34c58489]     +           2702 CFRunLoopRunSpecific  (in CoreFoundation) + 462  [0x7fff34bcfe3e]     +             2702 __CFRunLoopRun  (in CoreFoundation) + 1319  [0x7fff34bd09c2]     +               2702 __CFRunLoopServiceMachPort  (in CoreFoundation) + 247  [0x7fff34bd1ef5]     +                 2702 mach_msg  (in libsystem_kernel.dylib) + 60  [0x7fff6ebea170]     +                   2702 mach_msg_trap  (in libsystem_kernel.dylib) + 10  [0x7fff6ebe9dfa]     2702 Thread_4198   DispatchQueue_20: usernoted_server  (serial)     + 2592 start_wqthread  (in libsystem_pthread.dylib) + 15  [0x7fff6eca8b77]     + ! 2592 _pthread_wqthread  (in libsystem_pthread.dylib) + 290  [0x7fff6eca9a3d]     + !   2592 _dispatch_workloop_worker_thread  (in libdispatch.dylib) + 596  [0x7fff6ea5ec09]     + !     2592 _dispatch_lane_invoke  (in libdispatch.dylib) + 363  [0x7fff6ea555d6]     + !       2571 _dispatch_lane_serial_drain  (in libdispatch.dylib) + 597  [0x7fff6ea54c44]     + !       : 2571 _dispatch_client_callout  (in libdispatch.dylib) + 8  [0x7fff6ea4f658]     + !       :   2542 _dispatch_call_block_and_release  (in libdispatch.dylib) + 12  [0x7fff6ea4e6c4]     + !       :   | 2534 ???  (in usernoted)  load address 0x10ef1f000 + 0x3829  [0x10ef22829]     + !       :   | + 2532 ???  (in usernoted)  load address 0x10ef1f000 + 0xf6c5a  [0x10f015c5a]     + !       :   | + ! 1427 ???  (in usernoted)  load address 0x10ef1f000 +  Sample analysis of process 416 written to file /dev/stdout
For the past couple of weeks, a process identified as usernoted appeared to "take over" my machine after a few hours of use, eating over 99% of available CPU.  Force quitting the process doesn't help; only a system restart puts usernoted to sleep for a while.  What is this process and how do I get it under control?  I am running OS X 10.10.5 (build 14F1021).
Integral $\int_{0}^{\infty}e^{-ax}\cos (bx)\operatorname d\!x$ I want to evaluate the following integral via complex analysis $$\int\limits_{x=0}^{x=\infty}e^{-ax}\cos (bx)\operatorname d\!x \ \ ,\ \ a &gt;0$$  Which function/ contour should I consider ? How can I install software or packages without Internet (offline)? I have a friend who has got a computer that is not connected to the Internet. Is there any way to install software offline easily? How do I undo the most recent local commits in Git? How to design the attack class in an RPG game? How to use inotifywait to watch a directory for creation of files of a specific extension I have seen .      You should consider using inotifywait, as an example:  inotifywait -m /path -e create -e moved_to |     while read path action file; do         echo "The file '$file' appeared in directory '$path' via '$action'"         # do something with the file     done    My question is that, the above script watches a directory for creation of files of any type, but how do I modify the inotifywait command to report only when a file of certain type/extension is created (or moved into the directory) - e.g. it should report when any .xml file is created.  WHAT I TRIED:  I have run the inotifywait --help command, and have read the command line options. It has --exclude &lt;pattern&gt; and --excludei &lt;pattern&gt; commands to EXCLUDE files of certain types (by using regEx), but I need a way to INCLUDE just the files of a certain type/extension. OED says:     doobie: a marijuana cigarette    Origin unknown. A relationship with dobby has been suggested.    dobby/dobbie: A silly old man, a dotard, a booby. Dialectal.      First citations:    1967   J. B. Williams Narcotics &amp; Hallucinogenics. Dubbe, Negro slang for a marijuana roach.    1982   A. Maupin Further Tales of City 95,  I smoke a doobie at lunch.   But I just chanced upon  in Yahoo Answers (don't laugh! :) where someone posted:     "It's obvious that Shaggy's a , I'm sure he's been feeding Scoob a bit of his hash and whatnot."    Scoob = , cartoon "pet" dog of constantly-hungry hippie/village idiot Shaggy (from 1969)   I'm not entirely convinced that 1967 dubbe was necessarily a significant factor in the appearance of  since around 1970 (the hippie era, some might say).  So I'd like to know whether it's credible to claim the usage arose (primarily?) through association with the TV show (specifically, the two characters therein closely associated with marijuana). My non-native English speaking friend just asked me: "Data is..." or "Data are..."?  I said both but that's because I've been desensitized from reading/writing both (especially from writing code and adding quick comments).  My question: Is it acceptable to utilize either for a university paper? Or is one safer than the other (when confronted with stickler professors)?    Related questions: I have a doubt. I need help.  Can the basic axioms of equality be presented as "open axioms"?  I) (reflexivity) $\qquad x = x$              II)  (Substitutivity) $\qquad (x = y) \to \big(F (x, x) \to F (x, y)\big)$ Why is the time limit for editing comments 5 minutes? Enabling tftpd  sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist   Start:  sudo launchctl start com.apple.tftpd   See logs syslog -w  com.apple.xpc.launchd[1] (com.apple.tftpd[30687]) &lt;Warning&gt;: Service exited with abnormal code: 1   Or with log stream --process tftp --level debug  Filtering the log data using "process BEGINSWITH[cd] "tftp"" Timestamp                       Thread     Type        Activity             PID    TTL 2020-01-21 12:35:44.903240+0200 0x5292a    Activity    0x6afa0              31479  0    tftpd: (libsystem_info.dylib) Retrieve User by Name 2020-01-21 12:35:44.903949+0200 0x5292a    Default     0x0                  31479  0    tftpd: recvfrom: Resource temporarily unavailable   I also tried to run tftpd directly without launchctl sudo /usr/libexec/tftpd -d -i /private/tftpboot/ with the same results.  Earlier I used this configuration and it worked fine. But after some changes (may be OS update) it became broken. Current MacOS version is 10.14.6 (18G2022)    How to fix tftpd?    Appendix. Configuration file /System/Library/LaunchDaemons/tftp.plist has default content:  &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE plist PUBLIC "-//Apple Computer//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;Disabled&lt;/key&gt;     &lt;true/&gt;     &lt;key&gt;Label&lt;/key&gt;     &lt;string&gt;com.apple.tftpd&lt;/string&gt;     &lt;key&gt;ProgramArguments&lt;/key&gt;     &lt;array&gt;         &lt;string&gt;/usr/libexec/tftpd&lt;/string&gt;         &lt;string&gt;-i&lt;/string&gt;         &lt;string&gt;/private/tftpboot&lt;/string&gt;     &lt;/array&gt;     &lt;key&gt;inetdCompatibility&lt;/key&gt;     &lt;dict&gt;         &lt;key&gt;Wait&lt;/key&gt;         &lt;true/&gt;     &lt;/dict&gt;     &lt;key&gt;InitGroups&lt;/key&gt;     &lt;true/&gt;     &lt;key&gt;Sockets&lt;/key&gt;     &lt;dict&gt;         &lt;key&gt;Listeners&lt;/key&gt;         &lt;dict&gt;             &lt;key&gt;SockServiceName&lt;/key&gt;             &lt;string&gt;tftp&lt;/string&gt;             &lt;key&gt;SockType&lt;/key&gt;             &lt;string&gt;dgram&lt;/string&gt;         &lt;/dict&gt;     &lt;/dict&gt; &lt;/dict&gt; &lt;/plist&gt;   Update1 It seems port is in use. Why? Who?  $ sudo lsof -i:69 COMMAND PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME launchd   1 root   23u  IPv6 0x55f5dbd8d897c847      0t0  UDP *:tftp launchd   1 root   57u  IPv4 0x55f5dbd8d897e687      0t0  UDP *:tftp launchd   1 root   59u  IPv6 0x55f5dbd8d897c847      0t0  UDP *:tftp launchd   1 root   60u  IPv4 0x55f5dbd8d897e687      0t0  UDP *:tftp   launchd uses UDP port 69. Why?  $ ps -ef | grep tftp 501 94727 48073   0  4:16PM ttys007    0:00.00 grep --color=auto tftp I failed to open a lock. Now what? I'm using the built in Screen Sharing tool in El Capitan to control an iMac from a Macbook Pro in full screen mode. Everything works beautifully except that many special keys and gestures are intercepted by the local Mac and not sent to the shared Mac. Specifically:   Ctrl-Arrow (Desktops and Mission Control) F3 (Mission Control) F4 (LaunchPad) Three finger swipe (Switch between Desktops, Mission Control, Exposé) Two finger swipe from left side (Notification Center) Pinch with four fingers (Launchpad)   I can't find any way to switch between desktops on the remote machine other than manually opening the Mission Control app from the Finder or Dock. Disabling the gestures on the local machine doesn't help; they still don't get sent to the remote machine.  Is there any way to get special keys and gestures passed to the shared machine? $x^y = y^x$ for integers $x$ and $y$ Holomorphic function has at most countably zeros In the PHP manual, to show the syntax for functions with optional parameters, they use brackets around each set of dependent optional parameter. For example, for the  function, the manual reads:  string date ( string $format [, int $timestamp = time() ] )   Where $timestamp is an optional parameter, and when left blank it defaults to the  function's return value.  How do you go about creating optional parameters like this when defining a custom function in PHP? Proof of A ⊆ C and B ⊆ C ⇔ A ∪ B ⊆ C I know that this is valid because by thinking about it, you can see it's true, but I'm just not sure how I would go about actually proving it mathematically. I've kind of tried proof by contradiction, since that's what I use most of the time, but it doesn't seem to work.    In my mind, A ∪ B ⊆ C kind of just implies that A ⊆ C and B ⊆ C. Why does Jack let Walt go? In Breaking Bad S5 E14, Jack not only lets Walt go, but also leaves a barrel of money to him after killing Hank. I don't understand why he would do this. Jack says that, with 7 barrels of money, he doesn't need to cook meth any more, so there is no reason to keep Walt (the witness of the killing) alive, let alone to give him so much money. What's the rationale behind this? Or it's just mercy or respect? Size of VARBINARY field in SQL Server 2005 I am trying to determine the size in bytes of the contents in a VARBINARY(MAX) field in SQL Server 2005, using SQL. As I doubt there is native support for this, could it be done using CLR integration? Any ideas would be greatly appreciated. How to install the latest versions of NodeJS and NPM? I noticed over at the  website that node is currently at v 0.12.0.  Can someone let me know how to install the latest version of node together with npm (terminal commands please)? Get OS-level system information I'm currently building a Java app that could end up being run on many different platforms, but primarily variants of Solaris, Linux and Windows.  Has anyone been able to successfully extract information such as the current disk space used, CPU utilisation and memory used in the underlying OS? What about just what the Java app itself is consuming?  Preferrably I'd like to get this information without using JNI.