Can I run multiple commands at once in geth's JavaScript console?

Can I do something like > api1.command1() && api2.command2("arg2") && api1.command3()?


Can you separate them with ; ?

  • Yes! This works too :) Since this is the closest to what I'm looking for, I'm going to accept this answer, but thanks for all the help.
    – jeff
    Dec 20 '16 at 15:55
  • 1
    Note that separating with ; does not work fully. If you try web3.fromWei(eth.getBalance("0x9535b2e7faaba5288511d89341d94a38063a349b"), "ether"); web3.fromWei(eth.getBalance("0x88a80b35014fe7c33b4568cb818f2e16ba799b23"), "ether");, only a single result 1.01029574 is returned. There are ways to get around it, eg: var v1=web3.fromWei(eth.getBalance("0x9535b2e7faaba5288511d89341d94a38063a349b"), "ether"); var v2=web3.fromWei(eth.getBalance("0x88a80b35014fe7c33b4568cb818f2e16ba799b23"), "ether");console.log(v1 + " " + v2); will return the result 17.350627444329232008 1.01029574
    Dec 20 '16 at 15:59

Here's how I run my multiple command scripts in Linux and OS/X.

I've created a file $HOME/bin/multipleCommands.sh with the following contents:


geth attach << EOF | grep "RESULT:" | sed "s/RESULT: //"

var balance1 = web3.fromWei(eth.getBalance("0x9535b2e7faaba5288511d89341d94a38063a349b"), "ether");
console.log("RESULT: balance1=" + balance1);
var balance2 = web3.fromWei(eth.getBalance("0x88a80b35014fe7c33b4568cb818f2e16ba799b23"), "ether");
console.log("RESULT: balance2=" + balance2);


I then set the executable bit for this file using the command

chmod 700 $HOME/bin/multipleCommands.sh

I run the following command to produce the output:


In Ubuntu, the $HOME/bin subdirectory will be added to your $PATH once you log out and then log in. You can then run commands in the $HOME/bin subdirectory without specifying the $HOME/bin/ prefix to your command. So the following will work:


If you are running Windows, the commands above should work if you install the Cygwin shell.

While you are writing your script and debugging your geth commands, use the following statement in your script file so you can see the progress of the geth statements being executed:

# geth attach << EOF | grep "RESULT:" | sed "s/RESULT: //"
geth attach << EOF

instead of:

geth attach << EOF | grep "RESULT:" | sed "s/RESULT: //"
  • This is really cool ! But while debugging, when I run geth attach << EOF | grep "RESULT:" | sed "s/RESULT: //" I can't see what is executed, I get an infinite number of > until I ^C. What should I do next ? Jan 6 '17 at 16:11
  • @TeleportingGoat - use the loadScript(...) in the other answer if you need to use the console. Use the geth attach << EOF if you don't need to use the console and are still debugging. Then use the geth attach << EOF | grep "RESULT:" | sed "s/RESULT: //" when you have finished debugging and just have to run the command repeatedly.
    Jan 6 '17 at 16:15
  • Thanks. I'm getting Fatal: Unable to attach to remote geth: dial unix /path/to/geth.ipc: connect: no such file or directory. The path wasn't initially correct, so I changed geth attach<<EOF to geth attach ipc:/correct/path/geth.ipc, and I get the same error, but with the correct path (I think). Makes me remember why I had given up on attach after I discovered it... Jan 6 '17 at 16:25
  • What. I found the correct path with find / -name "eth.ipc" but now find returns nothing. Did it get deleted by running attach ? Jan 6 '17 at 16:28
  • Ooooh ok I understood now, I feel really stupid. You need an running instance of Geth to attach to, and geth.ipc exists only when geth is running. This in incredibly useful ! Jan 6 '17 at 16:32

I propose you to put them in a JavaScript file and use

LoadScript ('/path/myjs.js').


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