AutoEnvVars extends all the specific CLI flags with automatically generated env vars by capitalizing the flag, replacing .

CheckEnvVars iterates over all the environment variables and checks if any of them look like a CLI flag but is not consumed.

FlagString prints a single flag in help.

GlobalBig returns the value of a BigFlag from the global flag set.

MigrateGlobalFlags makes all global flag values available in the context.

NewApp creates an app with sane defaults.

BigFlag is a command line flag that accepts 256 bit big integers in decimal or hexadecimal syntax.

DirectoryFlag is custom cli.Flag type which expand the received string to an absolute path.

DirectoryString is custom type which is registered in the flags library which cli uses for argument parsing.