ncat and bash

Applications/README.md

@@ -1,11 +1,13 @@
 # Applications
 
-[Neovim](neovim.md): like `vim`.
+[bash](bash.md)
 
 [git](git.md)
 
 [tmux](tmux.md)
 
+[Neovim](neovim.md): like `vim`.
+
 [bat](https://github.com/sharkdp/bat): `cat` with colors.
 
 [fd](https://github.com/sharkdp/fd): simple `find`.
@@ -18,6 +20,8 @@
 
 [tldr](https://github.com/tldr-pages/tldr): simple `man`.
 
+[Ncat](ncat.md)
+
 [HTTPie](https://httpie.org/): call API.
 
 [rsync](rsync.md)

Applications/bash.md

@@ -0,0 +1,12 @@
+# Bash
+
+Read [Bash](https://wiki.archlinux.org/index.php/Bash).
+
+Read [Default Keyboard Shortcuts for Bash](https://catonmat.net/ftp/readline-emacs-editing-mode-cheat-sheet.pdf).
+
+Add to `~/.bashrc`:
+
+```bash
+export HISTCONTROL=ignoreboth:erasedups
+export HISTIGNORE="cd:cd *:ls:ls *:pwd:exit"
+```

Applications/ncat.md

@@ -0,0 +1,17 @@
+# Ncat
+
+Read [Ncat](https://nmap.org/ncat/).
+
+It is included in [nmap](https://www.archlinux.org/packages/extra/x86_64/nmap/).
+
+Check connection to host port:
+
+```sh
+ncat -zv host post
+```
+
+Example:
+
+```sh
+ncat -zv google.com 80
+```