How can I create an environment variable that contains the IP address of an adapter that is set via DHCP?
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I am using docker and my scripts reference an environment variable that I'm manually setting in user's foo account /etc/environment like:
SERVER_IP=172.16.16.29
I'm using in my docker-compose file (which I'm running under as foo)
environment:
- ServerIP=${SERVER_IP}
I would like to be able to have a variable DHCP_IP that will be populated when adapter enp0s3 has it's IP address set so that I can use DHCP_IP in place of SERVER_IP in the docker-compose above.
I'm not concerned about the IP address changing often as I'm using MAC address filtering in my router to assign the same IP. But I don't want to have to set the IP address manually in a file like I'm doing now.
So how can I put the value of the ip address of enp0s3 into a variable called DHCP_IP, and how can I reference that at the command line or in a file?
Or if you know of an alternative, I'm open to suggestions.
server 18.04 environment-variables
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
add a comment |
I am using docker and my scripts reference an environment variable that I'm manually setting in user's foo account /etc/environment like:
SERVER_IP=172.16.16.29
I'm using in my docker-compose file (which I'm running under as foo)
environment:
- ServerIP=${SERVER_IP}
I would like to be able to have a variable DHCP_IP that will be populated when adapter enp0s3 has it's IP address set so that I can use DHCP_IP in place of SERVER_IP in the docker-compose above.
I'm not concerned about the IP address changing often as I'm using MAC address filtering in my router to assign the same IP. But I don't want to have to set the IP address manually in a file like I'm doing now.
So how can I put the value of the ip address of enp0s3 into a variable called DHCP_IP, and how can I reference that at the command line or in a file?
Or if you know of an alternative, I'm open to suggestions.
server 18.04 environment-variables
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
1
DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"
– waltinator
Mar 25 at 17:45
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05
add a comment |
I am using docker and my scripts reference an environment variable that I'm manually setting in user's foo account /etc/environment like:
SERVER_IP=172.16.16.29
I'm using in my docker-compose file (which I'm running under as foo)
environment:
- ServerIP=${SERVER_IP}
I would like to be able to have a variable DHCP_IP that will be populated when adapter enp0s3 has it's IP address set so that I can use DHCP_IP in place of SERVER_IP in the docker-compose above.
I'm not concerned about the IP address changing often as I'm using MAC address filtering in my router to assign the same IP. But I don't want to have to set the IP address manually in a file like I'm doing now.
So how can I put the value of the ip address of enp0s3 into a variable called DHCP_IP, and how can I reference that at the command line or in a file?
Or if you know of an alternative, I'm open to suggestions.
server 18.04 environment-variables
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
I am using docker and my scripts reference an environment variable that I'm manually setting in user's foo account /etc/environment like:
SERVER_IP=172.16.16.29
I'm using in my docker-compose file (which I'm running under as foo)
environment:
- ServerIP=${SERVER_IP}
I would like to be able to have a variable DHCP_IP that will be populated when adapter enp0s3 has it's IP address set so that I can use DHCP_IP in place of SERVER_IP in the docker-compose above.
I'm not concerned about the IP address changing often as I'm using MAC address filtering in my router to assign the same IP. But I don't want to have to set the IP address manually in a file like I'm doing now.
So how can I put the value of the ip address of enp0s3 into a variable called DHCP_IP, and how can I reference that at the command line or in a file?
Or if you know of an alternative, I'm open to suggestions.
server 18.04 environment-variables
server 18.04 environment-variables
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
asked Mar 25 at 16:29
WhiskerBiscuitWhiskerBiscuit
1386
1386
1
DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"
– waltinator
Mar 25 at 17:45
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05
add a comment |
1
DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"
– waltinator
Mar 25 at 17:45
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05
1
1
DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"– waltinator
Mar 25 at 17:45
DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"– waltinator
Mar 25 at 17:45
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05
add a comment |
1 Answer
1
active
oldest
votes
Add the following to /etc/bash.bashrc
The adapter in question is: enp0s3, so change that accordingly
IP="$(ip addr show enp0s3 | awk '$1 == "inet" { print $2 }' | cut -d/ -f1)"
export SERVER_IP=${IP}
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
add a comment |
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1 Answer
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Add the following to /etc/bash.bashrc
The adapter in question is: enp0s3, so change that accordingly
IP="$(ip addr show enp0s3 | awk '$1 == "inet" { print $2 }' | cut -d/ -f1)"
export SERVER_IP=${IP}
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
add a comment |
Add the following to /etc/bash.bashrc
The adapter in question is: enp0s3, so change that accordingly
IP="$(ip addr show enp0s3 | awk '$1 == "inet" { print $2 }' | cut -d/ -f1)"
export SERVER_IP=${IP}
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
add a comment |
Add the following to /etc/bash.bashrc
The adapter in question is: enp0s3, so change that accordingly
IP="$(ip addr show enp0s3 | awk '$1 == "inet" { print $2 }' | cut -d/ -f1)"
export SERVER_IP=${IP}
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
Add the following to /etc/bash.bashrc
The adapter in question is: enp0s3, so change that accordingly
IP="$(ip addr show enp0s3 | awk '$1 == "inet" { print $2 }' | cut -d/ -f1)"
export SERVER_IP=${IP}
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
answered Mar 25 at 18:57
WhiskerBiscuitWhiskerBiscuit
1386
1386
add a comment |
add a comment |
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DHCP_IP="$(ip addr show enp0s3 | grep "inet " | awk '{print $2}' | cut -d/ -f1)"– waltinator
Mar 25 at 17:45
I can get the IP already. How do I put it to a variable?
– WhiskerBiscuit
Mar 25 at 18:05