How set multiple env variables for a bash command

You can one-time set vars for a single command by putting them on the command line before the command:

$ EC2_HOME=/path/to/dir JAVA_HOME=/other/path ec2-describe-regions

Alternately, you can export them in the environment, in which case they'll be set for all future commands:

$ export EC2_HOME=/path/to/dir$ export JAVA_HOME=/other/path$ ec2-describe-regions

linux bash cygwin

If you want to use the environment variables multiple times in the same session you can use:

export VAR1=value1 VAR2=value2 VARN=valueN

If you want to execute a command with multiple variables without affecting the current bash session, you can use:

VAR1=value1 VAR2=value2 VARN=valueN command arg=1

linux bash cygwin

As other *nix system, you can add function as following in your .bashrc file under your HOME directory.

function startec2(){    export EC2_HOME=/path/to/dir    export JAVA_HOME=/other/path     ec2-describe-regions}

Now, you can start your program by the following command:

startec2

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