Running ec2-describe-instances from the command line where you have AWS developer tools installed will display information about running instances.
Example:
To view instances simply run ec2-describe-instances
To view detailed help information run ec2-describe-instances –help
SYNOPSIS
ec2din (ec2-describe-instances)
ec2din [GENERAL OPTIONS] [INSTANCE [INSTANCE […]]]
GENERAL NOTES
Any command option/parameter may be passed a value of ‘-‘ to indicate
that values for that option should be read from stdin.
DESCRIPTION
List and describe your instances
The INSTANCE parameter is the instance ID(s) to describe.
If unspecified all your instances will be returned.
GENERAL OPTIONS
-K, –private-key KEY
Specify KEY as the private key to use. Defaults to the value of the
EC2_PRIVATE_KEY environment variable (if set). Overrides the default.
-C, –cert CERT
Specify CERT as the X509 certificate to use. Defaults to the value
of the EC2_CERT environment variable (if set). Overrides the default.
-U, –url URL
Specify URL as the web service URL to use. Defaults to the value of
‘https://ec2.amazonaws.com’ or to that of the EC2_URL environment
variable (if set). Overrides the default.
–region REGION
Specify REGION as the web service region to use.
This option will override the URL specified by the “-U URL” option and EC2_URL environment variable.
-v, –verbose
Verbose output.
-?, –help
Display this help.
-H, –headers
Display column headers.
–debug
Display additional debugging information.
–show-empty-fields
Indicate empty fields.
–connection-timeout TIMEOUT
Specify a connection timeout TIMEOUT (in seconds).
–request-timeout TIMEOUT
Specify a request timeout TIMEOUT (in seconds).