.. / timedatectl

This invokes the default pager, which is likely to be less, other functions may apply. This might not work if run by unprivileged users depending on the system configuration.

shell

用来生成一个交互式的系统shell。

sudo

如果二进制文件被 sudo 允许以超级用户身份运行，可能被用于访问文件系统、提升或维持特权访问。