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mbabineau/ssh-instance-function.sh

Last active July 19, 2016 16:49
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ssh-instance-function.sh
# ssh-instance - function to let you SSH to an EC2 instance ID
# Written by Mike Babineau <[email protected]>. Original here: https://gist.github.com/mbabineau/319882/
# Put this in ~/.profile and reload your terminal
function ssh-instance() {
if [ $# -lt 1 ] || [ $# -gt 3 ]; then
echo "Usage: ssh-instance [-r region] <instance id>"
else
case "$1" in
"-r")
if [ $# -eq 3 ] && [ -n "`echo $3|egrep \"^i-[0-9a-z]+\"`" ]; then
ssh `ec2-describe-instances --region $2 $3|grep "^INSTANCE"|cut -f4`
else
echo "Usage: ssh-instance [-r region] <instance id>"
return 1
fi;;
i-[0-9a-zA-Z]*)
if [ $# -eq 3 ] && [ "$2" == "-r" ]; then
ssh `ec2-describe-instances --region $3 $1|grep "^INSTANCE"|cut -f4`
elif [ $# -eq 1 ]; then
ssh `ec2-describe-instances $1|grep "^INSTANCE"|cut -f4`
else
echo "Usage: ssh-instance [-r region] <instance id>"
return 1
fi;;
*)
echo "Usage: ssh-instance [-r region] <instance id>"
esac
fi
return 0
}
Raw
ssh-instance.sh
#!/bin/bash
# ssh-instance - script to let you SSH to an EC2 instance ID
# Written by Mike Babineau <[email protected]>. Original here: https://gist.github.com/mbabineau/319882/
if [ $# -lt 1 ] || [ $# -gt 3 ]; then
echo "Usage: ssh-instance [-r region] <instance id>"
else
case "$1" in
"-r")
if [ $# -eq 3 ] && [ -n "`echo $3|egrep \"^i-[0-9a-z]+\"`" ]; then
ssh `ec2-describe-instances --region $2 $3|grep "^INSTANCE"|cut -f4`
else
echo "Usage: ssh-instance [-r region] <instance id>"
exit 1
fi;;
i-[0-9a-zA-Z]*)
if [ $# -eq 3 ] && [ "$2" == "-r" ]; then
ssh `ec2-describe-instances --region $3 $1|grep "^INSTANCE"|cut -f4`
elif [ $# -eq 1 ]; then
ssh `ec2-describe-instances $1|grep "^INSTANCE"|cut -f4`
else
echo "Usage: ssh-instance [-r region] <instance id>"
exit 1
fi;;
*)
echo "Usage: ssh-instance [-r region] <instance id>"
esac
fi
exit 0
@oillio
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oillio commented Jul 19, 2016 •
edited
Loading

Thanks @sebykrueger.
FYI - I had to add quotes (") around the query text to get this to work.
My final script:

# ssh-instance - function to let you SSH to an EC2 instance ID
# Written by Mike Babineau <[email protected]>. Original here: https://gist.github.com/mbabineau/319882/
# Put this in ~/.profile and reload your terminal
function ssh-instance() {
    if [ $# -lt 1 ] || [ $# -gt 3 ]; then
        echo "Usage: ssh-instance [-r region] <instance id>"
    else
        case "$1" in
            "-r")
                if [ $# -eq 3 ] && [ -n "`echo $3|egrep \"^i-[0-9a-z]+\"`" ]; then
                    ssh `aws ec2 describe-instances --region $2 --instance-ids $3 --output text --query "Reservations[0].Instances[0].PrivateIpAddress"`
                else
                    echo "Usage: ssh-instance [-r region] <instance id>"
                    return 1
                fi;;
            i-[0-9a-zA-Z]*)
                if [ $# -eq 3 ] && [ "$2" == "-r" ]; then
                    ssh `aws ec2 describe-instances --region $3 --instance-ids $1 --output text --query "Reservations[0].Instances[0].PrivateIpAddress"`
                elif [ $# -eq 1 ]; then
                    ssh `aws ec2 describe-instances --instance-ids $1 --output text --query "Reservations[0].Instances[0].PrivateIpAddress"`
                else
                    echo "Usage: ssh-instance [-r region] <instance id>"
                    return 1
                fi;;
            *)
                echo "Usage: ssh-instance [-r region] <instance id>"
            esac
    fi

    return 0
}

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