Add how to bash completion

docs/terminal/002.md

@@ -0,0 +1,38 @@
+# How to add completion for a bash script
+
+
+1 - you have a script `dothis`
+
+```bash
+if [ -z "$1" ]; then
+  echo "No command number passed"
+  exit 2
+fi
+
+exists=$(fc -l -1000 | grep ^$1 -- 2>/dev/null)
+
+if [ -n "$exists" ]; then
+  fc -s -- "$1"
+else
+  echo "Command with number $1 was not found in recent history"
+  exit 2
+fi
+```
+
+2 - In order to write completion create a file `dothis-completion.bash`
+
+```bash
+#/usr/bin/env bash
+
+complete -W "now1 tomorrow1 never1" dothis
+```
+
+3 - In order to add completion to your current bash session run
+
+```bash
+source ./dothis-completion.bash
+```
+
+4 - Voilà! Now you can push <tab> and see complection
+
+[source](https://iridakos.com/programming/2018/03/01/bash-programmable-completion-tutorial)

docs/terminal/README.md

@@ -5,3 +5,4 @@ Welcome to terminal page. Please open menu and enjoy.
 ## Menu
 
 - [Terminal moving](terminal/001.md)
+- [Add bash completion](terminal/002.md)