Creating Directories and Changing the Current Directory in Nushell

The [`glob` command](/commands/docs/glob.html) (note: not the same as `into glob`) produces a [`list`](types_of_data.html#lists) of filenames that match the glob pattern. This list can be expanded and passed to filesystem commands using the [spread operator](operators.html#spread-operator): ```nu # Find files whose name includes the current month in the form YYYY-mm let current_month = (date now | format date '%Y-%m') ls ...(glob $"*($current_month)*") ``` 3. Force `glob` type via annotation: ```nu # Find files whose name includes the current month in the form YYYY-mm let current_month = (date now | format date '%Y-%m') let glob_pattern: glob = ($"*($current_month)*") ls $glob_pattern ``` ## Creating a Directory As with most other shells, the [`mkdir` command](/commands/docs/mkdir.md) is used to create new directories. One subtle difference is that Nushell's internal `mkdir` command operates like the Unix/Linux `mkdir -p` by default, in that it: - Will create multiple directory levels automatically. For example: ```nu mkdir modules/my/new_module ``` This will create all three directories even if none of them currently exists. On Linux/Unix, this requires `mkdir -p`. - Will not error if the directory already exists. For example: ```nu mkdir modules/my/new_module mkdir modules/my/new_module # => No error ``` ::: tip A common mistake when coming to Nushell is to attempt to use `mkdir -p <directory>` as in the native Linux/Unix version. However, this will generate an `Unknown Flag` error on Nushell. Just repeat the command without the `-p` to achieve the same effect. ::: ## Changing the Current Directory ```nu cd cookbook ``` To change from the current directory to a new one, use the [`cd`](/commands/docs/cd.md) command. Changing the current working directory can also be done if [`cd`](/commands/docs/cd.md) is omitted and a path by itself is given: ```nu cookbook/ ``` Just as in other shells, you can use either the name of the directory, or if you want to go up a directory you can use the `..` shortcut. You can also add additional dots to go up additional directory levels: ```nu # Change to the parent directory

Nushell can convert strings to globs, list matching filenames, and then expand the results. Nushell's `mkdir` command creates directories, functioning like `mkdir -p` by default, creating multiple levels and not erroring if the directory already exists. The `cd` command changes the current directory; either the command or the directory name can be used. The `..` shortcut moves up directory levels.