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mongo - couldn't connect to server 127.0.0.1:27017
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Normally this caused because you didn't start mongod process before you try starting mongo shell.
Start mongod server
mongod
Open another terminal window
Start mongo shell
mongo
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Why is Node.js single threaded? [closed]
...rvers every client request is instantiated on a new thread. But in Node.js all the clients run on the same thread (they can even share the same variables!) I understand that I/O operations are event-based so they don't block the main thread loop.
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pip install mysql-python fails with EnvironmentError: mysql_config not found
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It seems mysql_config is missing on your system or the installer could not find it.
Be sure mysql_config is really installed.
For example on Debian/Ubuntu you must install the package:
sudo apt-get install libmysqlclient-dev
Maybe the mysql_config is not in your path, it will be ...
How do I change my Ruby version using RVM?
...ed to me too. I had:
export PATH=~/.rvm/bin:$PATH
Added in my .bashrc.
All I had to do was add another
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
to the same file and it worked!
Of course, you have to restart your terminal after that.
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Open Sublime Text from Terminal in macOS
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I finally got this to work on my OSX box. I used these steps to get it to work:
Test subl from your ST installation:
First, navigate to a small folder in Terminal that you want ST to open and enter the following command:
/Applications/Sublime\ Text.app/C...
How to upgrade PowerShell version from 2.0 to 3.0
...he OS that I am using is Windows 7, and the PowerShell version that is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0?
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Converting Java objects to JSON with Jackson
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object MUST have getters for all fields, wich you want your JSON includes.
– Drakonoved
Sep 25 '17 at 15:42
add a comment
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
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The $@ variable expands to all command-line parameters separated by spaces. Here is an example.
abc "$@"
When using $@, you should (almost) always put it in double-quotes to avoid misparsing of arguments containing spaces or wildcards (see below). T...
How to run eclipse in clean mode? what happens if we do so?
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How to use it:
Edit the eclipse.ini file located in your Eclipse install directory and insert -clean as the first line.
Or edit the shortcut you use to start Eclipse and add -clean as the first argument.
Or create a batch or shell script that calls the Eclipse executable with the -clean argu...
How to redirect output to a file and stdout
In bash, calling foo would display any output from that command on the stdout.
10 Answers
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