user-1: I have a Qt testnet3 node synched and running on my mac.  In the terminal, when simply trying:
$ bitcoin-cli getinfo

or
$ ./bitcoin-cli getinfo

I get:
-bash: bitcoin-cli: command not found

Anyone know why the command could or would not be found?  (server=1 in bitcoin.conf as well)

user59183: this should get you up and running with bitcoind on mac osx 
https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md

user6256: There it's no bitcoin-cli built in the dmg file for mac os. (Unless you compile it yourself, nor is there a bitcoind from my understanding) You can execute RPC commands using the built in options under the help -> debug / then click on the console tab in the os x client.

user73392: It's as simple as running brew install bitcoin assuming you are on macOSX and have brew installed.

user59017: There is a bitcoin-cli available for OSX. I also ran into this issue, and it is because I missed one of the setup steps. Here they are for posterity!
Install Xcode: 
$ xcode-select --install

Install Homebrew =>
https://brew.sh/
Clone the repo:
$ git clone https://github.com/bitcoin/bitcoin.git

Navigate into bitcoin directory, and run the autogen script:
$ cd bitcoin
$ ./autogen.sh


The autogen.sh script creates a set of automatic configuration scripts
  that will interrogate your system to discover the correct settings and
  ensure you have all the necessary libraries to compile the code.

Run the configure script:
$ ./configure


This will automatically discover all the necessary libraries and
  create a customized build script for your system.
  If all went well, the configure command will end by creating the
  customized build scripts that will allow us to compile bitcoind.

Compile the bitcoin source: 
$ make

Install the executables on your system:
$ sudo make install 

Default install location of bitcoind is /usr/local/bin. 
Confirm Bitcoin Core is installed:
$ which bitcoind
/usr/local/bin/bitcoind

$ which bitcoin-cli
/usr/local/bin/bitcoin-cli

Full disclosure this information worked for me, and it is from Andreas M. Antonopoulos' Mastering Bitcoin book! 

-1: <p>I have a Qt testnet3 node synched and running on my mac.  In the terminal, when simply trying:</p>

<pre><code>$ bitcoin-cli getinfo
</code></pre>

<p>or</p>

<pre><code>$ ./bitcoin-cli getinfo
</code></pre>

<p>I get:</p>

<pre><code>-bash: bitcoin-cli: command not found
</code></pre>

<p>Anyone know why the command could or would not be found?  (server=1 in bitcoin.conf as well)</p>
 59183: <p>this should get you up and running with bitcoind on mac osx 
<a href="https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md" rel="nofollow noreferrer">https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md</a></p>
 6256: <p>There it's no bitcoin-cli built in the dmg file for mac os. (Unless you compile it yourself, nor is there a bitcoind from my understanding) You can execute RPC commands using the built in options under the help -> debug / then click on the console tab in the os x client.</p>
 73392: <p>It's as simple as running <code>brew install bitcoin</code> assuming you are on macOSX and have brew installed.</p>
 59017: <p>There is a bitcoin-cli available for OSX. I also ran into this issue, and it is because I missed one of the setup steps. Here they are for posterity!</p>

<p><strong>Install Xcode:</strong> </p>

<pre><code>$ xcode-select --install
</code></pre>

<p><strong>Install Homebrew =></strong>
 <a href="https://brew.sh/" rel="noreferrer">https://brew.sh/</a></p>

<p><strong>Clone the repo:</strong></p>

<pre><code>$ git clone https://github.com/bitcoin/bitcoin.git
</code></pre>

<p><strong>Navigate into bitcoin directory, and run the autogen script:</strong></p>

<pre><code>$ cd bitcoin
$ ./autogen.sh
</code></pre>

<blockquote>
  <p>The autogen.sh script creates a set of automatic configuration scripts
  that will interrogate your system to discover the correct settings and
  ensure you have all the necessary libraries to compile the code.</p>
</blockquote>

<p><strong>Run the configure script:</strong></p>

<pre><code>$ ./configure
</code></pre>

<blockquote>
  <p>This will automatically discover all the necessary libraries and
  create a customized build script for your system.
  If all went well, the configure command will end by creating the
  customized build scripts that will allow us to compile bitcoind.</p>
</blockquote>

<p><strong>Compile the bitcoin source:</strong> </p>

<pre><code>$ make
</code></pre>

<p><strong>Install the executables on your system:</strong></p>

<pre><code>$ sudo make install 
</code></pre>

<p>Default install location of bitcoind is /usr/local/bin. 
<strong>Confirm Bitcoin Core is installed:</strong></p>

<pre><code>$ which bitcoind
/usr/local/bin/bitcoind

$ which bitcoin-cli
/usr/local/bin/bitcoin-cli
</code></pre>

<p>Full disclosure this information worked for me, and it is from Andreas M. Antonopoulos' <strong>Mastering Bitcoin</strong> book! </p>
