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house9/network-commands.sh

Last active December 21, 2015 19:39
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network-commands.sh
host SOMEDOMAIN.COM
# where ns1.isp.com is one of your ISP DNS servers
nslookup SOMEDOMAIN.COM ns1.isp.com
dig SOMEDOMAIN.COM @ns1.isp.com
traceroute SOMEDOMAIN.COM
# on MAC flush dns cache
dscacheutil -flushcache
sudo killall -HUP mDNSResponder # Mtn Lion
# remove an entry for an existing host
# if an IP of a host changes might need this
ssh-keygen -R hostname
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