AppendToFile appends content to a file.

ChangeFileOwnership changes the ownership of a file.

CreateDirAndChown creates a directory and changes its ownership.

FileExists checks if a file exists or not.

GetRepoNameFromConfig checks if the current directory (or any of its parent directories) is inside a Git repository.

IsScriptPresent checks if a script is already present in a file.

SetupFS initialize the file system instance.

WriteFileAndChown writes content to a file and changes its ownership.

Fs is the global file system instance, can be backed by real FS or MemMapFs for testing.