Ubuntu - -bash: add-apt-repository: command not found
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Ubuntu - -bash: add-apt-repository: command not found
Ошибка вида:
# add-apt-repository ppa:certbot/certbot -bash: add-apt-repository: command not found
Решение - доустановить пакет python-software-properties:
# apt-get install software-properties-common python-software-properties -y
