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# Description Close: #10278 This pr introduces `o>>`, `e>>`, `o+e>>` to allow redirection to append to a file. Examples: ```nushell echo abc o>> a.txt echo abc o>> a.txt cat asdf e>> a.txt cat asdf e>> a.txt cat asdf o+e>> a.txt ``` ~~TODO:~~ ~~1. currently internal commands with `o+e>` redirect to a variable is broken: `let x = "a.txt"; echo abc o+e> $x`, not sure when it was introduced...~~ ~~2. redirect stdout and stderr with append mode doesn't supported yet: `cat asdf o>>a.txt e>>b.ext`~~ ~~For these 2 items, I'd like to fix them in different prs.~~ Already done in this pr
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.