You can set a timeout period for gpg-agent in `~/.gnupg/gpg-agent.conf` with this line:

    default-cache-ttl 3600
	
That would tell gpg-agent to store the passphrase for one hour.  You wouldn&#39;t want it to be indefinite, but not constantly typing it is of benefit too.


If you are on Mac, I would suggest that you use `pinentry-mac`. Then you can save the password to the macOS keychain. 

Install with `brew install pinentry-mac`, and then add this line `pinentry-program /opt/homebrew/bin/pinentry-mac` to `~/.gnupg/gpg-agent.conf` (remove/comment out any other `pinentry-program` line in that file)

I&#39;m running v 4.2.6.
Starting this morning, I can&#39;t import some VMs, and some of my existing VMs are showing up as inaccessible and have the following error showing in the UI,

The same error too when i took the vm to another PC and try to open it with virtual box (v 5.0.10):


&gt; Cannot register the DVD image 
&gt;
&gt; &#39;C:\Program
&gt; Files\Oracle\VirtualBox\VBoxGuestAdditions.iso&#39;
&gt; {f5022f2e-0adc-4767-879d-65058a5578c5} because a CD/DVD image
&gt;
&gt; &#39;C:\Program Files\Oracle\VirtualBox\VBoxGuestAdditions.iso&#39; with UUID
&gt; {fc087cbc-df04-47b4-b42f-25f614463f78} already exists. Result Code: 
&gt; E_INVALIDARG (0x80070057) Component:  VirtualBox Interface: 
&gt; IVirtualBox {3b2f08eb-b810-4715-bee0-bb06b9880ad2}

VirtualBox import error Cannot register the DVD image

I&#39;m learning Electron and working with multiple windows and IPC. In my main script I have the following:

    var storeWindow = new BrowserWindow({
      width: 400,
      height: 400,
      show: false
    });
    
    ipc.on(&#39;show-store-edit&#39;, function(event, store) {
      console.log(store);
      storeWindow.loadURL(&#39;file://&#39; + __dirname + &#39;/app/store.html&#39;);
      storeWindow.show();
    });

And in my primary window&#39;s script, I have the following inside of a click event handler, pulling in a list of stores:

    $.getJSON(&quot;http://localhost:8080/stores/&quot; + item.id).done(function(store) {
       ipc.send(&#39;show-store-edit&#39;, store);
    });

On the console, I am printing the store data from my server. What I&#39;m unclear on is how to get that data into the view for my `storeWindow:store.html`. I&#39;m not even sure I&#39;m handling the sequence of events correctly but they would be:

* click Edit Store
* get store data from server
* open new window to display store data

or 

* click Edit Store
* open new window to display store data
* get store data from server

In the latter, I&#39;m not sure how I would get the ID required to fetch the store from the `storeWindow&#39;s` script.


Passing Data to Windows in Electron

Would it be possible for the GPG password to be saved, so that I am not prompted for the passphrase everytime I make a git commit?

Remember GPG password when signing git commits

<p>Would it be possible for the GPG password to be saved, so that I am not prompted for the passphrase everytime I make a git commit?</p>


I am getting this error for pull:

&gt; Your configuration specifies to merge with the ref
&gt; &#39;refs/heads/feature/Sprint4/ABC-123-Branch&#39; from the remote, but no
&gt; such ref was fetched.

This error is not coming for any other branch.&lt;br&gt;The special thing about this branch is that it is created from the previous commit of another branch.
&lt;br&gt;&lt;br&gt;My config file looks like:

    [core]
    	repositoryformatversion = 0
    	filemode = false
    	bare = false
    	logallrefupdates = true
    	symlinks = false
    	ignorecase = true
    	hideDotFiles = dotGitOnly
    [remote &quot;origin&quot;]
    	url = &lt;url here&gt;
    	fetch = +refs/heads/*:refs/remotes/origin/*
    [branch &quot;master&quot;]
    	remote = origin
    	merge = refs/heads/master
    [branch &quot;new-develop&quot;]
    	remote = origin
    	merge = refs/heads/new-develop
    [branch &quot;feature/Sprint4/ABC-123-Branch&quot;]
    	remote = origin
    	merge = refs/heads/feature/Sprint4/ABC-123-Branch

Your configuration specifies to merge with the &lt;branch name&gt; from the remote, but no such ref was fetched.?

I have a Dockerfile trying to package and deploy a web app to a container. The code of app fetches from git repository during Docker image building.
Here&#39;s the Dockerfile snapshot:

    ........
    RUN git clone --depth=1 git-repository-url $GIT_HOME/
    RUN mvn package -Dmaven.test.skip
    ........

I want the docker do not cache the step of `RUN git clone --depth=1 git-repository-url $GIT_HOME/` so that the on-going updated on the the repository can be reflected on the Docker image building. Is it possible to a achieve that?


How to prevent Dockerfile caching git clone

Is there a way to rename a Git branch locally and push it to the remote branch, even if there are already many commits pushed to the remote branch?

Or, is it necessary to create a new local branch, delete the old local branch, and then repeat the operation on the remote repository?

Rename a Git branch locally and remotely?

What I&#39;ve tried:
I don&#39;t recall to have an issue when in VS2013. When in VS2015, I&#39;ve tried the context menu inside one code file or right clicking just that file from Solution Explorer, yet it includes all changed files.

I&#39;ve also tried filtering and that doesn&#39;t help narrow down the checkin.

Using Visual Studio 2015, how to commit only one file?

I&#39;ve created a merge (into the &#39;master&#39; branch) that&#39;s now on a Bitbucket repo. Long story short: I need to undo that merge. 

I know that you can do this at the Github site itself, but Bitbucket doesn&#39;t have that feature. I&#39;m not clear on how to do this with Git without causing a mess.





How to undo a merge on Bitbucket?

I have a package.json with following (simplified) content in the scripts key:

    ...
    scripts: {
       &quot;start&quot;: &quot;NODE_ENV=${NODE_ENV:=production} node start-app.js&quot;,
	   &quot;poststart&quot;: &quot;echo $NODE_ENV&quot;
    }
    ...

From the command line I can run:

    npm start

This will run my start-app.js script and set the process.env.NODE_ENV  environment variable to &quot;production&quot;. See [here][1] for syntax explanation.

The poststart will automatically run after start as described [here][2].

However poststart will not &quot;inherit&quot; the NODE_ENV shell environment variable, so the echo command will not echo anything.

My producation code is a little more complex, but what I am trying to accomplish is passing down the NODE_ENV variable from the &quot;starting point&quot; to dependent scripts. Any suggestions/best practices on how to do that?

I dont want to hardcode the NODE_ENV in the poststart, because I might want to do:
     
    NODE_ENV=development npm start
and I want everyting &quot;down the chain&quot; inherit the same environment.

  [1]: https://stackoverflow.com/a/2013589/228450
  [2]: https://docs.npmjs.com/misc/scripts &quot;here&quot;

Passing environment variables in npm-scripts

Suppose I have a script named dd.sh, and I run it like this 

    ./dd.sh sample$name.mp4

So `$1` is the string `sample$name.mp4`.

    echo &#39;$1&#39; // shows $1

    echo &quot;$1&quot; // shows &quot;sample.mp4&quot;; want &quot;sample$name.mp4&quot;

Then how to process `$1` that I can detect whether there is a dollar sign in parameter `$1`

I want to process the string to `sample\$name.mp4` or just detect whether there is a dollar sign in parameter `$filename`


Escape dollar sign in string by shell script

How do I write a simple shell script (say script.sh), so that I can pass a URL as an argument while executing?

I want a browser to start with the page opened on that URL. I want to write the command in the script to open a browser and open the URL given in argument.


Shell script to open a URL

I&#39;m trying to dockerize my node.js app. When the container is built I want it to run a `git clone` and then start the node server. Therefore I put these operations in a .sh script. And run the script as a single command in the ENTRYPOINT:

    FROM ubuntu:14.04
    
    RUN apt-get update &amp;&amp; apt-get install -y build-essential libssl-dev gcc curl npm git
    
    #install gcc 4.9
    RUN apt-get install -y software-properties-common python-software-properties
    RUN add-apt-repository -y ppa:ubuntu-toolchain-r/test
    RUN apt-get update
    RUN apt-get install -y libstdc++-4.9-dev
    
    #install newst nodejs
    RUN curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
    RUN apt-get install -y nodejs
    
    RUN mkdir -p /usr/src/app
    WORKDIR /usr/src/app
    
    ADD package.json /usr/src/app/
    RUN npm install
    
    ADD docker-entrypoint.sh /usr/src/app/
    
    EXPOSE 8080
    
    ENTRYPOINT [&quot;/usr/src/app/docker-entrypoint.sh&quot;] 

My docker-entrypoint.sh looks like this:

    git clone git@&lt;repo&gt;.git
    git add remote upstream git@&lt;upstream_repo&gt;.git
    
    /usr/bin/node server.js


After building this image and run:

    docker run --env NODE_ENV=development -p 8080:8080 -t -i &lt;image&gt;

I&#39;m getting: 

    docker: Error response from daemon: oci runtime error: exec: &quot;/usr/src/app/docker-entrypoint.sh&quot;: permission denied.

I shell into the container and the permission of docker-entrypoint.sh is:

    -rw-r--r-- 1 root root 292 Aug 10 18:41 docker-entrypoint.sh

three questions:

1. Does my bash script have wrong syntax?

2. How do I change the permission of a bash file before adding it into an image?

3. What&#39;s the best way to run multiple git commands in entrypoint without using a bash script?

Thanks.


docker entrypoint running bash script gets &quot;permission denied&quot;

I use curl to get http headers to find http status code and also return response. I get the http headers with the command

    curl -I http://localhost

To get the response, I use the command 

    curl http://localhost

As soon as use the -I flag, I get only the headers and the response is no longer there. Is there a way to get both the http response and the headers/http status code in in one command?

Curl to return http status code along with the response

I just started using git and I install git and gpg via homebrew.
For some reason, I get this error when i do `git commit`
I looked at so many other stackoverflow questions regarding this topic and none of them worked for me.
How can I fix this error so that I can upload successfully. 

    error: gpg failed to sign the data
    fatal: failed to write commit object


Git error - gpg failed to sign data

I installed GPG from brew.

    brew install gpg

It is gnupg2-2.0.30_2.

When I commit, I do get a error message:

    You need a passphrase to unlock the secret key for
    user: &quot;Max Mustermann (mycomment) &lt;mm@test.de&gt;&quot;
    2048-bit RSA key, ID 1111AAAA, created 2017-01-05 
    
    error: gpg failed to sign the data
    fatal: failed to write commit object

I used the command:

    gpg --list-secret-keys | grep ^sec

and it gives me back:

    sec   2048R/1111AAAA 2017-01-05

Then I used this command:

    git config --global user.signingkey 1111AAAA

commit gives me back the same error message.

How can I solve this problem?


git - gpg onto mac osx: error: gpg failed to sign the data

I am having a problem while trying to decrypt some keys using GPG. The following output is given to me:

    gpg: can&#39;t connect to the agent: IPC connect call failed

I already edited some files, pointed in this tutorial: https://michaelheap.com/gpg-cant-connect-to-the-agent-ipc-connect-call-failed/ but with no success.

Possible reasons for that?

Thanks in advance

gpg: can&#39;t connect to the agent: IPC connect call failed

I&#39;m automating my Docker installation. Something like this:

    if apt-key fingerprint 0EBFCD88 | grep &quot;Key fingerprint = 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88&quot; &gt; /dev/null
    then
      # proceed
    fi

This worked fine in older versions of `apt-key`, but recent versions have two issues:

1. A different output format: I can hack around that
2. A warning:

        Warning: apt-key output should not be parsed (stdout is not a terminal)

Clearly, I can hack around this as well, just redirect `stderr` to `/dev/null`. It just made me curious:

**How do these fine folks suggest I verify my key fingerprints?** Or am I getting this fundamentally wrong by wanting to automate it, does that defeat the point? (I think not, since I still manually lifted the expected fingerprint from the website, but feel free to tell me otherwise...)

How to circumvent &quot;apt-key output should not be parsed&quot;?

On GitHub, I want to add a key to associate my computer with my account and I am given two options: create an SSH or a GPG key. 

What is the difference between the two keys? and is there a preferred one to use?  
I understand how to create both by following the guide on the site but I don&#39;t know which one is better to use.

Content Type	Original Author	Original Content on Stackoverflow
Question	gauge	View Question on Stackoverflow
Solution 1 - Git	Ben	View Answer on Stackoverflow
Solution 2 - Git	Pelmered	View Answer on Stackoverflow

Remember GPG password when signing git commits

Git Problem Overview

Git Solutions

Solution 1 - Git

Solution 2 - Git

Passing Data to Windows in Electron

VirtualBox import error Cannot register the DVD image

Attributions