How to use the command 'yadm perms' (with examples)

yadm perms is a command used to manually update permissions for files being managed by yadm, a tool used to manage dotfiles with a git backend. While yadm usually handles permissions automatically, there might be scenarios where a manual override is needed. This command can be especially useful if the automatic processing of permissions has been disabled by setting yadm.auto-perms to "false". This might happen when precise control over file permissions is required, which could be crucial in privacy-sensitive environments.

Use case 1: Change file permissions

Code:

yadm perms

Motivation:

The yadm perms command comes in handy when there’s a need to synchronize the file permissions of your dotfiles without making any additional changes. This could be motivated by changes in security policies or requirements that demand specific permission settings, like making certain files readable or executable only by specific users. When yadm’s automatic permission management is disabled, running this command ensures that all files in your repository have their permissions set as intended.

Explanation:

• yadm: This is the command-line tool for managing dotfiles, which are typically configuration files in a user’s home directory.

• perms: This argument instructs yadm to update the file permissions according to the specifications contained within the repository. The step is necessary when the default automatic permissions management has been turned off or a user wants to ensure that all permissions are refreshed to their stored state explicitly.

Example output:

When you run the yadm perms command, there is usually no verbose output if it executes successfully, as its role is understated but crucial. However, in the case of an error or if the command encounters files not tracked by yadm, you might see informative messages or error alerts.

Conclusion:

The yadm perms command is a specialized tool in the yadm suite designed to manage file permissions. While unnecessary for most users, it provides an essential function for environments that require strict control over dotfile permissions. By understanding the motivation and function behind this command, users can better manage their dotfiles, ensuring they comply with organizational or personal security policies. This tool is an excellent example of how yadm accommodates advanced users who need more customized functionality beyond the default automatic permissions management.