which: no javac in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/opt/install/redis6/bin:/root/bin)readlink: 缺少操作数Try 'readlink --help' for more information.dirname: 缺少操作数Try 'dirname --help' for

git clone/pull代码时提示输入密码，密码输入正确但是报错：git Permission denied, please try again.

docker镜像pull报错：Get “https://registry-1.docker.io/v2/”: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

docker镜像pull报错：Get “https://registry-1.docker.io/v2/”: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)