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AWS:EC2のプロンプト部分($PS1)がわかりにくいのでNAME Tagに変える

Last updated at Posted at 2015-06-12

わかりにくいんじゃー
ってことで、NAME Tagを使うように修正です。
※サーバにIAMロール付けておいて下さい。describe-instancesが打てれば良いです。

/etc/profile.d/term.sh
export AWS_DEFAULT_REGION=ap-northeast-1

INSID=`curl http://169.254.169.254/latest/meta-data/instance-id 2>/dev/null`
HNAME=`aws ec2 describe-instances --output json | jq -r '.Reservations[].Instances[] |
  select(.InstanceId == "'${INSID}'") |
  [
    ( .Tags[]| select(.Key == "Name") | .Value )
  ] | @csv' | cut -d \" -f 2`

export PS1="[\u@\${HNAME} \W]\\$ "

上記をprofileで読みこめば、以下のようになります。

[ec2-user@ip-192-168-X-XXX ~]$

[ec2-user@myserverName ~]$

といった具合です。

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