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68 lines
3.3 KiB
Markdown
68 lines
3.3 KiB
Markdown
---
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title: M1 Mac - How to Switch the Terminal between x86_64 and arm64
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date: 2023-08-23 15:36:14
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catagories: [macbook pro, mac m1, macOS, terminal]
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tags: [terminal, macOS, M1]
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---
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## How to Switch the Terminal between x86_64 and arm64
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https://vineethbharadwaj.medium.com/m1-mac-switching-terminal-between-x86-64-and-arm64-e45f324184d9
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Here is a simple writeup on how I switch between x86_64 and arm64 in the Terminal app on my MacBook Pro with Apple Silicon.
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So you have the new Mac with Apple Silicon. However, a lot of your projects are compiled in x86 and/or you are still building apps for x86, or whatever it is, you still want to compile the x86_64 code on your new Mac in the Terminal. You know it is possible with the Rosetta 2 (personally love it!). But how do you do it efficiently?
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While there are many ways of doing it, the following is the best one I have found to easily switch between the two architectures using just a simple Terminal command as below (actually hiding the command under an alias)..
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switching efficiently between x86_64 and arm64 using created alias
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So let’s look at what’s behind it, and how you too can easily set it up!
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The main command which does the magic is the one below:
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$env /usr/bin/arch -<architecture> /bin/zsh --login
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… just replace the _<architecture>_ with your preferred one..
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**For example:**
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- To see your current architecture, type:
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$arch
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see current architecture the Terminal is using
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As we see in the image above, I am currently using arm64, hence any code I compile will be for this architecture.
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- To switch to x86_64, type:
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==$env /usr/bin/arch -x86_64 /bin/zsh —-login==
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Now if you type the arch command again, you will see that the target architecture has been changed. Now you can go ahead and compile your code using Rosetta 2 for the x86_64 architecture.
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# Creating alias in .zshrc:
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I don’t want to remember the whole command and type it all the time (obviously it’s not efficient). The simplest solution is to create an alias to it in the _.zshrc_
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Just _cd_ into your home directory and open the .zshrc file.. If you don’t have one, you can easily create it using the _touch_ command. (If you don’t know about it, there are already plenty of tutorials/write-ups online)..
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Here’s how my _.zshrc_ file looks like.. I have named my aliases arm and intel for the arm and x86_64 architectures respectively. You can name your aliases whatever you want. Just remember to relaunch the Terminal after updating and saving the _.zshrc_ file.
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adding alias to .zshrc
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Ignoring the first line, you can see the two alias I have created for arm and intel. To switch, I just need to type the alias and that’s it!
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# **Bonus:**
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If you only want to use the Terminal app with Rosetta 2 for the x86_64 architecture, you can simple right click on the Terminal app in the _Applications>Utilities_, go the _‘Get Info’ and tick on “Open using Rosetta”_
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