Take the 2-minute tour ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.

In Arch Linux, how can I check if a network device (say eth0) has a carrier signal present?

share|improve this question
1  
Possible duplicate? Some more methods there. –  sr_ Nov 10 '11 at 13:04
add comment

2 Answers

up vote 9 down vote accepted

cat /sys/class/net/eth0/carrier is by far the easiest method.

share|improve this answer
add comment

If you want that information and more in handy little commands:

mii-tool eth0
ethtool eth0

might do the job.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.