我于2021年2月24日美国东部时间下午7：00（东部标准时间）成功安装了gcloud的命令行界面（带有自动完成here）。我的操作系统是Ubuntu 20.04
从上述源代码复制的Shell命令：

sudo apt-get update
# You should probably do other commands after this like
#   sudo apt-get upgrade, sudo apt-get dist-upgrade, 
#   but I didn't need them

# can cd wherever here:
cd
wget https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-307.0.0-linux-x86_64.tar.gz
tar –xvzf google-cloud-sdk-307.0.0-linux-x86_64.tar.gz
cd google-cloud-sdk
./install.sh

# Answer a few "y/N" questions, mostly to your preference.

#   NOTE: Be sure to answer "Y" to the question "modify profile to update your $PATH and enable shell command completion?" !!  (This was the crux of the OP's question)

# Clean up:
cd ..
rm -f google-cloud-sdk-307.0.0-linux-x86_64.tar.gz

文档说要在你的配置文件中找到它。首先，你需要找到你的gcloud安装。对我来说，它在/snap中。然后，找到完成文件（应该直接在``目录下）。对我来说，它是：/snap/google-cloud-cli/current/completion.bash.inc最后，更新您的个人资料。我在bash上，所以我做了

cd
nano .profile

滚动到最后并添加：source /snap/google-cloud-cli/current/completion.bash.inc