Registry editor and batch files equivalent in OSX?

OS X based on BSD UNIX. There is no registry, and thus, no registry editor or equivalent.

As for 'batch files', the closest thing to that would be shell scripting. You can get started by reading up on it here: https://developer.apple.com/library/mac/documentation/OpenSource/Conceptual/Shel lScripting/Introduction/Introduction.htm…

As KiltedTim states there is no registry for OS X, only Windows uses a registry. The nearest equivalent for OS X are either various .conf files typically for Unix derived programmes, and various .plist files for OS X programs.

Again as KiltedTim states OS X is the Mac operating system and is on an underlying BSD style Unix system. You can for many things treat OS X and Linux as being very similar in how to configure at least the Unix style side of things.

Now getting back to VNC, WireShark, and SecureCRT. There are many different native Mac VNC applications available, there is even a partial one built-in to OS X. However more standard VNC implementations include RealVNC but there are many others as well. See https://www.realvnc.com/products/vnc/documentation/5.0/installing-removing/macos x

Note: As I said OS X even has a partial VNC program built-in. This can connect to other VNC 'servers' and it is also possible to turn on the ability for OS X to accept connections from other standard VNC clients. (This is not enabled as standard.) You need to go to System Preferences -> Sharing and enable Screen Sharing. You also need to click on Computer Settings and enable 'VNC viewers may control screen with password:'.

WireShark also exists for the Mac see https://www.wireshark.org/download.html this however needs X11 also installing which you can get here http://xquartz.macosforge.org/landing/

For SecureCRT then I don't think you need anything extra as the built-in Terminal.app does this and via Terminal.app and the also built-in tools of OS X you can also do SSH as well as telnet connections to other systems. If you want to do the reverse i.e. allow another system to SSH connect to a Mac then this requires turning on 'Remote Login' in System Preferences -> Sharing.

If your issue is allowing one virtual machine to talk to another, then this might be something either you need to configure in VMware Fusion - which you say you are using, or more likely a matter of configuring the firewalls in the various VMs.

Finally you can also use Microsoft Remote Desktop client (for Mac) to allow a Mac to remotely control a Windows computer even one running in a VM assuming you have set things up to enable this.

Unfortunately I need to run a program much like esxi that can run multiple host system inside of it. I need to use wireshark and secure crt to open up those host machines from my mac.

On the Mac that is VMware Fusion, Parallels, or VirtualBox. Since you already mention VMware Fusion, you already have what you need, unless I am confusing esxi (I'm thinking it is a VMware hypervisor for intel based servers).

I am not going to try to untangle your .bat file. I can only say that you have a wealth of scripting languages you can use on OS X:

• Applescript (we do not think the same, and it is difficult for me to grok)
• Unix shell scripting (I'm most partial to this myself)
• Perl (I've a few of these, but they do flow from my fingers like shell scripting does)
• Python (never touched it)
• Ruby (never touched it.)
• awk (my first love, and I still use it from time to time)
• Automator (I almost forgot; this Apple utility can be very useful for some tasks)

Ultra VNC ( to remotely access the windows host inside the esxi/gns3/virl like program

Microsoft provides "Microsoft Remote Desktop" for Mac via the Apple App Store. I use it all the time.

<https://itunes.apple.com/us/app/microsoft-remote-desktop/id715768417?mt=12>

CoRD is an other RDC capable client for connecting to Windows remote desktops (I've used it before Microsoft up'ed their game)

<http://cord.sourceforge.net>

There is the built-in OS X Screen Sharing (a VNC client). Finder -> Go -> Connect to server -> vnc://address.of.vnc.server:5900 (adjust the 5900 to be the correct VNC port the server is using).

Chicken is a very good VNC client

<http://sourceforge.net/projects/chicken/>

Secure CRT (a telnet or ssh tool to access the host inside the esxi/gsn3/virl like program

ssh does exists on OS X from an Applications -> Utilities -> Terminal session. I live in ssh sessions to Linux, Solaris, AIX and other Macs.

Telnet from a Terminal session also exists, but it is 'Not' secure. ssh, scp, and sftp are much better tools.

Wireshark ( a sniffer tool that can monitor traffic between the host machines inside the esxi/gns3/virl like program.

Wireshark does exist for OS X

<https://www.wireshark.org/download.html>

ALso see:

<http://jacobsalmela.com/os-x-yosemite-secret-packet-sniffer/>

<http://osxdaily.com/2015/04/23/sniff-packet-capture-packet-trace-mac-os-x-wirele ss-diagnostics/>

<Capture a packet trace using Terminal in OS X - Apple Support>