add categories

CONTRIBUTING.md

@@ -8,8 +8,8 @@ The easiest way is to go to [README.md](README.md) and click on the "pen" icon i
 
 If you want to add an entry to the `README.md` please consider this:
 
-- if you want to add something, please use the template `[ACCOUNT/REPO](https://github.com/ACCOUNT/REPO) [[CRATE](https://crates.io/crates/CRATE)] — DESCRIPTION`
-    * if you've not published your crate to `crates.io` remove the `[[CRATE](...)]` part.
+- if you want to add something, please use the template `[ACCOUNT/REPO](https://github.com/ACCOUNT/REPO) — DESCRIPTION`
+- if you want to add categories, please refer to categories in [awesome-rust](https://github.com/rust-unofficial/awesome-rust).
 - please pay attention to the alphabetical ordering.
 
 

README.md

@@ -4,66 +4,74 @@ If you want to contribute, please read [CONTRIBUTING.md](CONTRIBUTING.md).
 
 ## Table of contents
 
-- [cat](#cat)
-- [du](#du)
-- [find](#find)
-- [grep](#grep)
-- [hexdump](#hexdump)
-- [ls](#ls)
-- [nvm](#nvm)
-- [ps](#ps)
-- [rm](#rm)
-- [sed](#sed)
-- [tldr](#tldr)
-- [top](#top)
+- [Applications](#applications)
+  - [System tools](#system-tools)
+    - [cat](#cat)
+    - [du](#du)
+    - [find](#find)
+    - [grep](#grep)
+    - [hexdump](#hexdump)
+    - [ls](#ls)
+    - [nvm](#nvm)
+    - [ps](#ps)
+    - [rm](#rm)
+    - [sed](#sed)
+    - [tldr](#tldr)
+    - [top](#top)
+  - [Text processing](#text-processing)
 
-## cat
+## Applications
+
+### System tools
+
+#### cat
 
 * [sharkdp/bat](https://github.com/sharkdp/bat) - A cat(1) clone with wings.
 
-## du
+#### du
 
 * [bootandy/dust](https://github.com/bootandy/dust) - A more intuitive version of du in rust
 
-## find
+#### find
 
 * [sharkdp/fd](https://github.com/sharkdp/fd) - A simple, fast and user-friendly alternative to 'find'
 
-## grep
-
-* [BurntSushi/ripgrep](https://github.com/BurntSushi/ripgrep) - ripgrep recursively searches directories for a regex pattern while respecting your gitignore
-
-## hexdump
+#### hexdump
 
 * [hexyl](https://github.com/sharkdp/hexyl) - A command-line hex viewer
 
-## ls
+#### ls
 
 * [ogham/exa](https://github.com/ogham/exa) - A replacement for 'ls' 
 * [Peltoche/lsd](https://github.com/Peltoche/lsd) - An ls with a lot of pretty colors and awesome icons
-j
 
-## [nvm](https://github.com/nvm-sh/nvm)
+#### [nvm](https://github.com/nvm-sh/nvm)
 
 * [Schniz/fnm](https://github.com/Schniz/fnm) - 🚀 Fast and simple Node.js version manager, built in Rust
 
-## ps
+#### ps
 
 * [dalance/procs](https://github.com/dalance/procs) - A modern replacement for ps written in Rust
 
-## rm
+#### rm
 
 * [nivekuil/rip](https://github.com/nivekuil/rip) - A safe and ergonomic alternative to rm
 
-## sed
+#### sed
 
 * [chmln/sd](https://github.com/chmln/sd) - Intuitive find & replace CLI (sed alternative)
 
-## [tldr](https://github.com/tldr-pages/tldr)
+#### [tldr](https://github.com/tldr-pages/tldr)
 
 * [dbrgn/tealdeer](https://github.com/dbrgn/tealdeer) - A very fast implementation of tldr in Rust.
 
-## top
+#### top
 
 * [ClementTsang/bottom](https://github.com/ClementTsang/bottom) - Yet another cross-platform graphical process/system monitor.
 * [cjbassi/ytop](https://github.com/cjbassi/ytop) - A TUI system monitor written in Rust
+
+### Text processing
+
+#### grep
+
+* [BurntSushi/ripgrep](https://github.com/BurntSushi/ripgrep) - ripgrep recursively searches directories for a regex pattern while respecting your gitignore