Maybe we can use the following regex instead, 'awk '$1 ~
/^127|localhost/ {print $0}'' is used to fix 'ff02::1 ip6-allnodes'
case, and add 'g' option to modifity all hostname.
$ hostname=ubuntu
$ echo '127.0.1.1 ubuntu.me.com ubuntu' |awk '$1 ~ /^127|localhost/ {print
$0}' |sed "s/\s*\(${hostname}\)\(\s*\)/\tnewnode/g"
127.0.1.1 newnode.me.com newnode
Addition, also need to remove "f ! echo "$RET" | grep -q 'ubuntu';" as
Peter Wu said above
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https://bugs.launchpad.net/bugs/1452202
Title:
ubuntu preseed install fails to set a hostname
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