diff --git a/tldr/flutterfire b/tldr/flutterfire
new file mode 100644
index 00000000..c66a5b26
--- /dev/null
+++ b/tldr/flutterfire
@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# flutterfire
+
+> Configure a Firebase project for your Flutter app.
+> Note: Requires Firebase CLI and FlutterFire CLI to be installed.
+> More information: <https://firebase.google.com/docs/flutter/setup>.
+
+- Initialize and configure Firebase for your current Flutter app:
+
+`flutterfire configure`
+
+- Specify platforms (iOS, Android, web) to support:
+
+`flutterfire configure --platforms {{ios,android,...}}`
+
+- Use a specific Firebase project:
+
+`flutterfire configure --project {{project_id}}`
diff --git a/tldr/getnpusers.py b/tldr/getnpusers.py
index 81ebb655..d01b9d2e 100644
--- a/tldr/getnpusers.py
+++ b/tldr/getnpusers.py
@@ -11,11 +11,11 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Enumerate users with Kerberos pre-authentication disabled (default anonymous enumeration):
 
-`GetNPUsers.py {{domain}}/ -usersfile {{path/to/userslist}} -dc-ip {{domain_controller_ip}}`
+`GetNPUsers.py {{domain}}/ -usersfile {{path/to/userslist}} -dc-ip {{domain_controller_ip}} -no-pass`
 
 - Perform AS-REP roasting and dump crackable hashes for offline cracking:
 
-`GetNPUsers.py {{domain}}/ -usersfile {{path/to/userslist}} -dc-ip {{domain_controller_ip}} -request`
+`GetNPUsers.py {{domain}}/ -usersfile {{path/to/userslist}} -dc-ip {{domain_controller_ip}} -no-pass -request`
 
 - Authenticate with valid credentials (if anonymous binding is disabled):
 
diff --git a/tldr/p7zip b/tldr/p7zip
index 7f90d39f..f3d8e356 100644
--- a/tldr/p7zip
+++ b/tldr/p7zip
@@ -15,7 +15,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Archive a file keeping the input file:
 
-`p7zip {{[-k|--heep]}} {{path/to/file}}`
+`p7zip {{[-k|--keep]}} {{path/to/file}}`
 
 - Decompress a file, replacing it with the original uncompressed version:
 
@@ -23,7 +23,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Decompress a file keeping the input file:
 
-`p7zip {{[-d|--decompress]}} {{[-k|--heep]}} {{compressed.ext}}.7z`
+`p7zip {{[-d|--decompress]}} {{[-k|--keep]}} {{compressed.ext}}.7z`
 
 - Skip some checks and force compression or decompression:
 
diff --git a/tldr/python-m-json.tool b/tldr/python-m-json.tool
new file mode 100644
index 00000000..6cff7406
--- /dev/null
+++ b/tldr/python-m-json.tool
@@ -0,0 +1,18 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# python -m json.tool
+
+> Validate and pretty-print JSON data.
+> Part of Python's standard library.
+> More information: <https://docs.python.org/library/json.html#module-json.tool>.
+
+- Pretty-print JSON from a file:
+
+`python -m json.tool {{path/to/file.json}}`
+
+- Validate and pretty-print JSON from standard input:
+
+`echo '{{{"key": "value"}}}' | python -m json.tool`