our lab recently has a new Ubuntu (14.04.1) machine but many of software package is out of date.
I try to update it before upgrade to Ubuntu 16.04. However, there is always problems for the command "sudo apt-get update"
I have googled this problem and change "/etc/apt/sources.list" several times, but the error still exists．
I am thinking the error may come from => Could not resolve 'hcapxb01'
I have no idea about the 'hcapxb01'. My machine has internet connection but I can't ping or nslookup the 'hcapxb01'
Experts, please help me to slove "sudo apt-get update" error. Thank you