That&#39;s simple: `sudo fs_usage | grep [path_to_file]`

`lsof` will list open files, but it can be a bit awkward for momentary touches (eg, if the file isn&#39;t open when lsof runs, it doesn&#39;t show).

I think your best bet would be fernLightning&#39;s [fseventer.app](https://web.archive.org/web/20150721071058/http://www.fernlightning.com/lib/exe/fetch.php?id=software%3Afseventer%3Astart&amp;cache=cache&amp;media=software:fseventer:fseventer.zip). It&#39;s &quot;nagware&quot;, and allows you to watch (graphically) the fsevents API in real-time.

But I spent 2 minutes Googling and found [your answer here](http://hints.macworld.com/article.php?story=20040121001144687).

&gt; **$ lsof | grep [whatever]**
&gt; 
&gt; Where [whatever] is replaced with the filename you&#39;re looking for.
&gt; With this, you can see which program is desperately holding onto your
&gt; about-to-be-trashed file. Once you exit that program, your trash will
&gt; empty.

The faster way is:

    $ lsof [path_to_file]

This solution doesn&#39;t require the root password and gives you back the following, clear, result:

    COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF     NODE NAME
    Finder     497  JR7   21r   REG    1,2   246223 33241712 image.jpg
    QuickLook 1007  JR7  txt    REG    1,2   246223 33241712 image.jpg



Another option is [Sloth][1]. It&#39;s a free, open source GUI for LSOF that others have mentioned.


  [1]: http://sveinbjorn.org/sloth

We had a Web Application working on an intranet and I&#39;m trying to publish it to the internet using Visual Studio 2010. The destination server is running iis7 and the Web Management Service is running.

On Visual Studio 2010 my service URL is:

&gt; https://xxx.xxx.xxx.xxx:8172/MsDeploy.axd

And site/application is:

&gt; Default Web Site/WebApp

Marking as IIS App on destination and Allow untrusted certificate is checked and i&#39;m using an administration account.

Visual Studio return the following error:

&gt; Start Web Deploy Publish the Application/package to
&gt; https://xxx.xxx.xxx.xxx:8172/MsDeploy.axd?site=Default%20Web%20Site ...
&gt; C:\Program
&gt; Files\MSBuild\Microsoft\VisualStudio\v10.0\Web\Microsoft.Web.Publishing.targets(3588,5):
&gt; Error : Web deployment task failed.(Remote agent (URL
&gt; https://xxx.xxx.xxx.xxx:8172/MsDeploy.axd?site=Default Web Site) could
&gt; not be contacted.  Make sure the remote agent service is installed and
&gt; started on the target computer.)
&gt; 
&gt; Remote agent (URL
&gt; https://xxx.xxx.xxx.xxx:8172/MsDeploy.axd?site=Default Web Site) could
&gt; not be contacted.  Make sure the remote agent service is installed and
&gt; started on the target computer. An unsupported response was received.
&gt; The response header &#39;MSDeploy.Response&#39; was &#39;&#39; but &#39;v1&#39; was expected.
&gt; **The remote server returned an error: (403) Forbidden.**

Any ideas how to publish it without a valid SSL certificate?




MsDeploy is returning 403 forbidden

I am using [Tasks][1] to run long running server calls in my ViewModel and the results are marshalled back on `Dispatcher` using `TaskScheduler.FromSyncronizationContext()`. For example:

    var context = TaskScheduler.FromCurrentSynchronizationContext();
    this.Message = &quot;Loading...&quot;;
    Task task = Task.Factory.StartNew(() =&gt; { ... })
                .ContinueWith(x =&gt; this.Message = &quot;Completed&quot;
                              , context);

This works fine when I execute the application. But when I run my `NUnit` tests on `Resharper` I get the error message on the call to `FromCurrentSynchronizationContext` as: 

&gt; The current SynchronizationContext may not be used as a TaskScheduler.

I guess this is because the tests are run on worker threads. How can I ensure the tests are run on main thread ? Any other suggestions are welcome.

  [1]: http://msdn.microsoft.com/en-us/library/system.threading.tasks.aspx


The current SynchronizationContext may not be used as a TaskScheduler

I would like to be able to track a file and see which process is touching that file.  Is that possible?  I know that I can see the list of open processes in activity monitor but I think it&#39;s happening to quickly for me to see it.  The reason for this is I&#39;m using a framework and I think the system version of the framework is being used instead of the debug version and I&#39;d like to see which process is touching it.

See what process is using a file in Mac OS X

<p>I would like to be able to track a file and see which process is touching that file.  Is that possible?  I know that I can see the list of open processes in activity monitor but I think it's happening to quickly for me to see it.  The reason for this is I'm using a framework and I think the system version of the framework is being used instead of the debug version and I'd like to see which process is touching it.</p>


I’d like to view information for processes running in OS X. Running `ps` in the terminal just lists the open Terminal windows. How can I see all processes that are running?

Say I’m running a web browser, terminal and text editor. I’d like to see information for the text editor and web browser.

How to examine processes in OS X&#39;s Terminal?

First off I&#39;m using Mac.

Next, I need to execute this &quot;file.sh&quot; we will call it. Everytime I need to execute it I have to open Terminal and type:

    cd /Users/Jacob/Documents/folderWithFileInIt
    bash file.sh

This is okay, but I feel like it would be a lot quicker if I make the file execute on double click, don&#39;t you think?

So my question is, how do I make this file executable via double click?

My ideas were either:

a) type something like chmod into terminal and change permissions?

b) make a file, put code I wrote above in it ^ and then make that file executable?

c) make an automation somehow to do this?

Which way is best, or is there an even better way? Also please explain as much as you can, I&#39;m new to Terminal. Thanks.

How do I make this file.sh executable via double click?

I&#39;ve managed to bork my local development environment.

All my local Rails apps are now giving the error:

    PGError
    could not connect to server: Permission denied
    	Is the server running locally and accepting
    	connections on Unix domain socket &quot;/var/pgsql_socket/.s.PGSQL.5432&quot;?

I&#39;ve no idea what&#39;s caused this. 

While searching for a solution I&#39;ve updated all bundled gems, updated system gems, updated MacPorts. No joy.

Others have reported this issue when upgrading from OSX Leopard to Lion, due to confusion over which version of Postgres should be used (i.e., OSX version or MacPorts version). I&#39;ve been running Lion for several months, so it seems strange that this should happen now.

I&#39;m reluctant to mess around too much without first understanding what the problem is. How can I debug this methodically? 

How can I determine how many versions of PostgreSQL are on my system, which one is being accessed, and where it is located? How do I fix this if the wrong PostgreSQL is being used?

Sorry for the noob questions. I&#39;m still learning how this works! Thanks for any pointers.

EDIT 

Some updates based on suggestions and comments below.

I tried to run `pg_lsclusters` which returned a `command not found` error. 

I then tried to local my pg_hba.conf file and found these three sample files:

    /opt/local/share/postgresql84/pg_hba.conf.sample
    /opt/local/var/macports/software/postgresql84/8.4.7_0/opt/local/share/postgresql84/pg_hba.conf.sample
    /usr/share/postgresql/pg_hba.conf.sample

So I assume 3 versions of PSQL are installed? Macports, OSX default and ???. 

I then did a search for the launchctl startup script `ps -ef | grep postgres` which returned


    0    56     1   0 11:41AM ??         0:00.02 /opt/local/bin/daemondo --label=postgresql84-server --start-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper start ; --stop-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper stop ; --restart-cmd /opt/local/etc/LaunchDaemons/org.macports.postgresql84-server/postgresql84-server.wrapper restart ; --pid=none
      500   372     1   0 11:42AM ??         0:00.17 /opt/local/lib/postgresql84/bin/postgres -D /opt/local/var/db/postgresql84/defaultdb
      500   766   372   0 11:43AM ??         0:00.37 postgres: writer process                                                                                                                                                                                                                                                                                                                   
      500   767   372   0 11:43AM ??         0:00.24 postgres: wal writer process                                                                                                                                                                                                                                                                                                               
      500   768   372   0 11:43AM ??         0:00.16 postgres: autovacuum launcher process                                                                                                                                                                                                                                                                                                      
      500   769   372   0 11:43AM ??         0:00.08 postgres: stats collector process                                                                                                                                                                                                                                                                                                          
      501  4497  1016   0 12:36PM ttys000    0:00.00 grep postgres

I&#39;ve posted the contents of postgresql84-server.wrapper at http://pastebin.com/Gj5TpP62.

I tried to run `port load postgresql184-server` but received an error `Error: Port postgresql184-server not found`.

I&#39;m still very confused how to fix this, and appreciate any &quot;for dummies&quot; pointers.

Thanks!

EDIT2 

This issue began after I had some problems with daemondo. My local Rails apps were crashing with an application error along the lines of &quot;daemondo gem can not be found&quot;. I then went through a series of bundle updates, gem updates, port updates and brew updates to try and find the issue.

Could this error be an issue with daemondo? 


Can not connect to local PostgreSQL

i&#39;m running mongo 1.8.2 and trying to see how to cleanly shut it down on Mac.

on our ubuntu servers i can shutdown mongo cleanly from the mongo shell with:

    &gt; use admin
    &gt; db.shutdownServer()

but on my Mac, it does not kill the mongod process.  the output shows that it &#39;should be&#39; shutdown but when i ps -ef | grep mongo it shows me an active process.  also, i can still open a mongo shell and query my dbs like it was never shutdown.

the output from my db.shutdownServer() locally is:

    MongoDB shell version: 1.8.2
    connecting to: test
    &gt; use admin                  
    switched to db admin
    &gt; db.shutdownServer()
    Tue Dec 13 11:44:21 DBClientCursor::init call() failed
    Tue Dec 13 11:44:21 query failed : admin.$cmd { shutdown: 1.0 } to: 127.0.0.1
    server should be down...
    Tue Dec 13 11:44:21 trying reconnect to 127.0.0.1
    Tue Dec 13 11:44:21 reconnect 127.0.0.1 failed couldn&#39;t connect to server 127.0.0.1
    Tue Dec 13 11:44:21 Error: error doing query: unknown shell/collection.js:150

i know i can just kill the process but i&#39;d like to do it more cleanly.

What&#39;s a clean way to stop mongod on Mac OS X?

Just want to make sure that I got it right:

 1. Do I need to `__unsafe_unretain` objects that I don&#39;t own?
 2. If an object is `__unsafe_unretained` Do I need to use `assign` in the `@property`? Does that mean that the object is not retained, and just refers to the object I assign to?
 3. When would I want to use it except of delegates?
 4. Is that an ARC thing or was it in use before?

ARC - The meaning of __unsafe_unretained?

Is there any way to create a cron expression for not running the job at all?

I though of using this expression : 

&gt; 0 0 0 1 1 ? 3099

...which will practically do the job as it will run on year 3099, but is there a cleaner way to do it?

A cron job that will never execute

How do I read a .man file that&#39;s not on my manpath? I know I had a command for this, but now I don&#39;t remember, and I can&#39;t find the right switch in the man pages for man.

How to read a .man file not on manpath?

   I have the script below to subtract the counts of files between two directories but the `COUNT=` expression does not work. What is the correct syntax?

    #!/usr/bin/env bash

    FIRSTV=`ls -1 | wc -l`
    cd ..
    SECONDV=`ls -1 | wc -l`
    COUNT=expr $FIRSTV-$SECONDV  ## -&gt; gives &#39;command not found&#39; error
    echo $COUNT

Subtract two variables in Bash

I do something like the following in a Makefile:

    echo &quot;0.1 + 0.1&quot; | bc

(in the real file the numbers are dynamic, of course)

It prints `.2` but I want it to print `0.2`.

I would like to do this without resorting to `sed` but I can&#39;t seem to find how to get `bc` to print the zero. Or is `bc` just not able to do this?

How do I get bc(1) to print the leading zero?

I want to output some data to a pipe and have the other process do something to the data line by line. Here is a toy example:

    mkfifo pipe
    cat pipe&amp;
    cat &gt;pipe

Now I can enter whatever I want, and after pressing enter I immediately see the same line. But if substitute second pipe with `echo`:

    mkfifo pipe
    cat pipe&amp;
    echo &quot;some data&quot; &gt;pipe

The pipe closes after `echo` and `cat pipe&amp;` finishes so that I cannot pass any more data through the pipe. Is there a way to avoid closing the pipe and the process that receives the data, so that I can pass many lines of data through the pipe from a bash script and have them processed as they arrive?

How to avoid echo closing FIFO named pipes? - Funny behavior of Unix FIFOs

&gt; No, I don&#39;t want to use **ncurses**, because I want to learn how the
&gt; terminal works and have fun programming it on my own. :) It doesn&#39;t
&gt; have to be portable, it has to work on linux xterm-based terminal emulators only.

What I want to do is programming an interactive terminal application like htop and vim are. What I mean is not the output of characters which look like boxes or setting colors, this is trivial; also to make the content fit to the window size. What I need is

 1. how to get **mouse interactions** like clicking on a character and scrolling the mouse wheel (when the mouse is at a specific character) to implement scrolling [**EDIT: in a terminal emulator of course**], and

 1. how to completely **save and restore** the output of the parent process and seperate my printing from its output, so after leaving my application nothing but the command I entered in the shell should be there, like when running htop and quitting it again: nothing is visible from this application anymore.

I really don&#39;t want to use ncurses. But of course, if you know which part of ncurses is responsible for these tasks, you&#39;re welcome to tell me where in the source code I can find it, so I will study it.

Writing a &quot;real&quot; interactive terminal program like vim, htop, ... in C/C++ without ncurses

For instance, if you were to run a Python script you would type _python filename.py_ or if you wanted to run a C program _make filename_ then _./ filename_. How do you do this with _.js_ files?

How do you run JavaScript script through the Terminal?

I have a file `/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home`

I am trying to find if I have the *.jdk anywhere else on my hard drive. So I do a search command:

    find . -name &quot;*.jdk&quot;

But it doesn&#39;t find anything. Not even the one I know that I have. How come? 

Finding all files with certain extension in Unix?

I have my core project in C#.

I work on a database, where some tables have the columns &quot;user_mod&quot; and &quot;date_mod&quot; for sign who and when made some mods and the same with &quot;data_new&quot; and &quot;user_new&quot;.

My question: is there a way to centralize this and make this data inserted automatically, where I create the instance of `dbContext`?

If not, I will use an audit trail tool. I have seen some of these, but there is a problem: all of these, require some code in my model. But I don&#39;t want to write in my model, because if I have to change it, I will lost the mods. Is it possible use an audit trail for EF6 without writing in the model file(s)? How?


EDIT:

My attempt to override the saveChanges.


    public partial class PieEntities : DbContext
    {
        public override int SaveChanges(System.Data.Objects.SaveOptions options)
        {
            var timestamp = DateTime.Now;

            EntityState es = EntityState.Added;
            ObjectStateManager o = new ObjectStateManager();
     
            foreach (ObjectStateEntry entry in o.GetObjectStateEntries(EntityState.Added ))  {
                if (entry.Entity.GetType() == typeof(TabImpianti)) {
                    TabImpianti impianto = entry.Entity as TabImpianti;
                    impianto.DATA_INS = timestamp;
                    impianto.DATA_MOD = timestamp;
                    string u = mdlImpostazioni.p.UserName;
                    impianto.USER_INS = u;
                    impianto.USER_MOD = u;
                }
            }
            return base.SaveChanges(options);
        }
    }

**UPDATE: I&#39;ve summarized the [solution here][1].**


  [1]: https://programmingistheway.wordpress.com/2016/02/11/entity-framework-6-audittrack-changes/

Entity Framework 6: audit/track changes

need pinned resolution feature of yarn, but also want to audit with `npm audit`? Is there a yarn alternative to `npm audit`? Or, alternately, will pinning resolutions of dependencies of dependencies work in `npm`?

is there a yarn alternative for npm audit?

How do you get `lsof` to produce numeric port information instead of attempting to resolve the port to service name?

For example, I want ``TCP *:http (LISTEN)`` to give me ``TCP *:80 (LISTEN)`` in-fact if at all possible I never want to see another service name in ``lsof`` print-out ever again.  So if there is a way to make numeric ports the default I would like to understand how to do that as well.

Content Type	Original Author	Original Content on Stackoverflow
Question	JPC	View Question on Stackoverflow
Solution 1 - Macos	spaceboy.cz	View Answer on Stackoverflow
Solution 2 - Macos	Shaun	View Answer on Stackoverflow
Solution 3 - Macos	Michael Dautermann	View Answer on Stackoverflow
Solution 4 - Macos	bontoJR	View Answer on Stackoverflow
Solution 5 - Macos	cavalcade	View Answer on Stackoverflow

See what process is using a file in Mac OS X

Macos Problem Overview

Macos Solutions

Solution 1 - Macos

Solution 2 - Macos

Solution 3 - Macos

Solution 4 - Macos

Solution 5 - Macos

The current SynchronizationContext may not be used as a TaskScheduler

MsDeploy is returning 403 forbidden

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