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[Client] Run Minecraft Jar / Client from the Command Line
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I mean starting the literal game via the command line. For example, I could launch the 1.8.9.jar via the command line.
The command is actually huge. You must make sure all the correct libraries & natives are downloaded and in the correct place, so the commandline will work. By default the libraries are downloaded by the launcher, but not until you press play for the first time. A good way to make sure all the correct libraries are downloaded and in the correct spot, run the official launcher, download your version and press play. It will generate all the dependencies, then start your game.
This was the last working commandline I established a few years back while working on a launcher. This is specifically for windows and the commandline is platform-dependent. You'll notice there is a few variables that need to get filled in.
Replace: + PCUser +
With: Your computers name. E.G Bryce-PC
Replace: + username +
With: Your Minecraft Username
Replace: + dir +
With: Your came root directory (default is the well known %appdata% path)
Replace: + client +
With: Your account UUID
Replace: + session +
With: The client token generated by the Mojang Session servers (https://wiki.vg/Authentication#Authenticate)
*Note: only required if you plan on connecting to servers
Replace: ANY 1.8.8
With: Your intended version of the game
**Note:
This commandline will not work, unless you take all the required natives, and move them to:
"gameDir/versions/versionHere/natives".
And ensure the Libraries have been downloaded by the official Mojang launcher.
Hopefully I gave you enough to get a running start. It took some interesting methods to get this entire commandline put together.
This was the last working commandline I established a few years back while working on a launcher. This is specifically for windows and the commandline is platform-dependent. You'll notice there is a few variables that need to get filled in.
Replace: + PCUser +
With: Your computers name. E.G Bryce-PC
Replace: + username +
With: Your Minecraft Username
Replace: + dir +
With: Your came root directory (default is the well known %appdata% path)
Replace: + client +
With: Your account UUID
Replace: + session +
With: The client token generated by the Mojang Session servers (https://wiki.vg/Authentication#Authenticate)
*Note: only required if you plan on connecting to servers
Replace: ANY 1.8.8
With: Your intended version of the game
**Note:
This commandline will not work, unless you take all the required natives, and move them to:
"gameDir/versions/versionHere/natives".
And ensure the Libraries have been downloaded by the official Mojang launcher.
Code:
java -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Dos.name=Windows10 -Dos.version=10.0 -Djava.library.path=C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\versions\1.8.8\natives -cp C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.39\realms-1.7.39.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar;C:\Users\" + PCUser + "\AppData\Roaming\.minecraft\versions\1.8.8\1.8.8.jar net.minecraft.client.main.Main --username " + username + " --version 1.8.8 --gameDir C:\Users\" + PCUser + "\AppData\Roaming\.minecraft --assetIndex 1.8 --uuid " + client + " --accessToken " + session + " --userProperties {} --userType mojang"Hopefully I gave you enough to get a running start. It took some interesting methods to get this entire commandline put together.
Last edited:
Thank you so much, I appreciate it. I'll let you know what happens.
Edit: Updated to show a more recent way to find the required Natives.
No problem.
Each version requires different libraries, or even the same libraries but different versions. ALL of these are downloaded in the /libraries folder. You need to ensure these are present.
You'll need to acquire the system natives too. You'll be able to find these in:
AppData/Local/Temp/XXXX-XXX-XXXXX
(Only while the game is running! This folder will delete when you close the game)
The X's will be random letters and numbers. You can easily search for "lwjgl64.dll" in your search bar to find the correct folder. Copy ALL the DLL's and move them to:
{gamedir}/versions/{version}/natives
For sake of example, and to help you further, I've attached a working version of 1.8.8 that I put together when I was neck deep in this project. It contains the 1.8.8 command line, libraries (for both windows and linux), and any other required files. This version will work right out of the box. It should help you follow the format so you can get later versions working on your own.
https://bryces.website/1.8.8.rar
*PS: If you are looking to have Minecraft Forge included with your launched game, There are a bunch of other required parameters & dependencies that forge requires on its own, alongside the other default requirements.
No problem.
Each version requires different libraries, or even the same libraries but different versions. ALL of these are downloaded in the /libraries folder. You need to ensure these are present.
You'll need to acquire the system natives too. You'll be able to find these in:
AppData/Local/Temp/XXXX-XXX-XXXXX
(Only while the game is running! This folder will delete when you close the game)
The X's will be random letters and numbers. You can easily search for "lwjgl64.dll" in your search bar to find the correct folder. Copy ALL the DLL's and move them to:
{gamedir}/versions/{version}/natives
For sake of example, and to help you further, I've attached a working version of 1.8.8 that I put together when I was neck deep in this project. It contains the 1.8.8 command line, libraries (for both windows and linux), and any other required files. This version will work right out of the box. It should help you follow the format so you can get later versions working on your own.
https://bryces.website/1.8.8.rar
*PS: If you are looking to have Minecraft Forge included with your launched game, There are a bunch of other required parameters & dependencies that forge requires on its own, alongside the other default requirements.
Last edited:
Alright, thanks. One other thing, I fail to understand the natives folder that is ideally there when I am developing a client but isn't when I export it. Where might the DLLs (natives folder) be stored with all of these versions if it appears to be a necessity?
Edit: I've edited in a more modern, more complete solution into my second reply on this thread. Only use this post if you explicitly plan on using Legacy natives.
See, that was an interesting problem I ran into as well. The way I acquired the DLL's was to use a legacy version of the Mojang Launcher.
When you use an older version of the launcher, after you press play, go to
{gameDir}/versions/{version}
The legacy launchers automatically create a folder called
natives-XXXXXXXXXXX
The X's being replaced with random numbers/letters
natives-82a7sd6a87sd6
This folder will dis-appear when you close the game however.
So basically, I used an old launcher, downloaded and pressed play. Once the game was open, I left it open, and went to the versions folder, copied the natives-XXXXXXXXXX and pasted it as just natives. Bam! All DLL's acquired.
In terms of the new launcher, I never put research into how to acquire these new DLL's
See, that was an interesting problem I ran into as well. The way I acquired the DLL's was to use a legacy version of the Mojang Launcher.
When you use an older version of the launcher, after you press play, go to
{gameDir}/versions/{version}
The legacy launchers automatically create a folder called
natives-XXXXXXXXXXX
The X's being replaced with random numbers/letters
natives-82a7sd6a87sd6
This folder will dis-appear when you close the game however.
So basically, I used an old launcher, downloaded and pressed play. Once the game was open, I left it open, and went to the versions folder, copied the natives-XXXXXXXXXX and pasted it as just natives. Bam! All DLL's acquired.
In terms of the new launcher, I never put research into how to acquire these new DLL's
Last edited:
I got it to launch, I used the command from Bryce to accomplish it. I replace everything with the proper variables. I was getting an error for Unrecognized VM option 'CMSIncrementalMode', so I just removed the -XX:+CMSIncrementalMode argument. I also had to create a natives folder in the 1.8.8 folder and put the DLLs from my temp folder (found them through a quick Everything Search) into the natives folder. I ran it, and it was functional.
This is useful information to those looking for the DLL's. I guess, you can use the old launcher to acquire them the same way I did, or, If you are using the current launcher, search in your Temp folder! (Just for them googlers, tryna archive these solutions for em)
Also, I am glad I was able to help you. I remember spending HOURS on this stuff trying to get it all figured out.
I am glad I didn't have to do the same, thanks to you
I am glad I didn't have to do the same, thanks to you
I've gone and updated a few of my posts to include your /temp solution. Good eye on that.
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