Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I want to determine if a network card is enabled, up, and plugged in. Basically, I want to know if the network card will work. I need this information from with a C++ program, and would like to display an error message when the network isn’t working properly. If possible I would like to avoid using shell commands to determine this information.
You can look at
/sys/class/net/eth0/operstatewhere eth0 is your interface to see if it’s up.Look at
/sys/class/net/eth0/carrierto see if there is a carrier.Though I guess executing
ifconfigand friends will give you more compatibility to *BSDs.