How do I group fields in MongoDB?

How do I group fields in MongoDB? Mongodb group by multiple fields using Aggregate operation First, the key on which the grouping is based is selected and then the collection is divided into groups according to the selected key value. You can then create a final document by aggregating the documents in each group. Do […]

How do I automatically add SSH keys?

How do I automatically add SSH keys? To add your key to ssh-agent, type ssh-add ~/path/to/my_key . Tip: If you want ssh-agent to forget your key after some time, you can configure it to do so by running ssh-add -t . How do you enter a passphrase for a key? ssh/id_ed25519 > Enter old passphrase: […]

What is fatal error?

What is fatal error? In computing, a fatal exception error or fatal error is an error that causes a program to abort and may therefore return the user to the operating system. When this happens, data that the program was processing may be lost. Can Fatal Error die? Fatal has been described by Xedramon as […]

How do I make the text bigger in Visual Studio?

How do I make the text bigger in Visual Studio? Increase font size: Ctrl/Cmd and + Decrease font size: Ctrl/Cmd and – Reset font size to default: Ctrl/Cmd and 0. How do I view the output window in Visual Studio? To open the Output window, on the menu bar, choose View > Output, or press […]

How do I change Ctrl C in Linux?

How do I change Ctrl C in Linux? Here are the shortcuts I would like to set up: Ctrl – C to copy the selected text in the terminal to the clipboard. Ctrl – V to paste from the clipboard into the terminal. Ctrl – Z to undo the editing on the current line in […]

How do I read response headers?

How do I read response headers? The most easily accessible way to view response headers would be using your web browser. In Google Chrome, browse to the page you’d like to research, and right-click(PC) or a command-click(MAC) the page to pull up options and then select Inspect. The Inspect feature will open the troubleshooting console. […]

How do I extract a report from TFS?

How do I extract a report from TFS? Click on team option. Click on New List from the sub-menu. Select the Team foundation server(TFS server) From dropdown. Select the project from team project collection. Select team project from the list. Click on connect. Select the query list. Select the query which need to export to […]

How do you plot experimental data?

How do you plot experimental data? Data Analysis & Graphs Review your data. Try to look at the results of your experiment with a critical eye. Calculate an average for the different trials of your experiment, if appropriate. Make sure to clearly label all tables and graphs. Place your independent variable on the x-axis of […]

How do you keep a socket connection alive?

How do you keep a socket connection alive? The SO_KEEPALIVE option for a socket is disabled (set to FALSE) by default. When this socket option is enabled, the TCP stack sends keep-alive packets when no data or acknowledgement packets have been received for the connection within an interval. For more information on the keep-alive option, […]

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