Update cheatsheets

tldr/gemini

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# gemini
+
+> Launch an interactive prompt with Gemini AI.
+> More information: <https://github.com/google-gemini/gemini-cli>.
+
+- Start a REPL session to chat interactively:
+
+`gemini`
+
+- Send the output of another command to Gemini and exit immediately:
+
+`{{echo "Summarize the history of Rome"}} | gemini {{[-p|--prompt]}}`
+
+- Override the default model (default: gemini-2.5-pro):
+
+`gemini {{[-m|--model]}} {{gemini-2.5-flash}}`
+
+- Run inside a sandbox container:
+
+`gemini {{[-s|--sandbox]}}`
+
+- Execute a prompt then stay in interactive mode:
+
+`gemini {{[-i|--prompt-interactive]}} "{{Give me an example of recursion in Python}}"`
+
+- Include all files in context:
+
+`gemini {{[-a|--all-files]}}`
+
+- Show memory usage in status bar:
+
+`gemini --show-memory-usage`