Renew DHCP IP address in Ubuntu
Answer:
To rename an IP address using DHCP in Ubuntu, try enter the commands below:
1. Release the current IP
# sudo dhclient -r2. Renew a new IP
# sudo dhclientApr 282011
Create Facebook Test Users
Answer:
In the last article, you already know how to get the Facebook access token. In this post, I will tell you how to create testing accounts for your app's testing.
# curl -F 'access_token=ACCESS_TOKEN' 'https://graph.facebook.com/APP_ID/accounts/test-users?installed=true&permissions=read_stream'
You can manipulate the permissions as needed.
How to get my Facebook App' access token?
Answer:
Assume you have your created a Facebook application, and you have the two things: App ID & App Secret.
You can get the access token by a simple curl command.
# curl -F type=client_cred -F client_id=APP_ID -F client_secret=APP_SECRET https://graph.facebook.com/oauth/access_token
Show HTTP response header using curl
Answer:
To show the response of HTTP request to a specific server, you can use the "curl -I" command.
Example:
# curl -I "http://www.example.com"
HTTP/1.0 302 Found
Location: http://www.iana.org/domains/example/
Server: BigIP
Connection: Keep-Alive
Content-Length: 0Allow a remote IP for incoming connection in UFW (Uncomplicated firewall)
Answer:
To allow a remote IP for incoming connection in Ubuntu's UFW (Uncomplicated firewall), you can use the following command:
# sudo ufw allow from x.x.x.x
Of course you need to reload the firewall.
# sudo ufw reload
