■Raspberry Pi 4B(Ubuntu 20.04)のホスト名を変更する。 デフォルトではubuntu。 $ hostnamectl |awk -F: '{if($1 ~ /ID/){gsub("[0-9a-f]","X",$2);print $1":"$2}else{print $0}}' Static hostname: ubuntu Icon name: computer Machine ID: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Boot ID: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Operating System: Ubuntu 20.04.1 LTS Kernel: Linux 5.4.0-1018-raspi Architecture: arm64 ■FQDNで設定する。 $ sudo hostnamectl set-hostname raspi.myhome.local ■変更後の確認 $ hostnamectl |awk -F: '{if($1 ~ /ID/){gsub("[0-9a-f]","X",$2);print $1":"$2}else{print $0}}' Static hostname: raspi.myhome.local Icon name: computer Machine ID: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Boot ID: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Operating System: Ubuntu 20.04.1 LTS Kernel: Linux 5.4.0-1018-raspi Architecture: arm64 $ hostname -s raspi $ hostname raspi.myhome.local $ cat /etc/hostname raspi.myhome.local
