update maintanance

IT/Cheatsheet.md

@@ -63,7 +63,7 @@ Löscht den letzten Commit und alle darin enthaltenen Änderungen unwiderruflich
 | Befehl | Beschreibung |
 | :--- | :--- |
 | `htop` / `btop` | Interaktiver Prozess-Manager (CPU/RAM). |
-| `ps aux | grep [app]` | Zeigt spezifische laufende Prozesse. |
+| `ps aux (pipe) grep [app]` | Zeigt spezifische laufende Prozesse. |
 | `kill -9 [PID]` | Beendet Prozess hart (SIGKILL). |
 | `systemctl status [dienst]` | Prüft Status eines Service (z.B. docker, sshd). |
 | `journalctl -xe` | Zeigt System-Logs (bei Fehlern). |
@@ -115,4 +115,112 @@ Löscht den letzten Commit und alle darin enthaltenen Änderungen unwiderruflich
 | `ssh -p 2222 user@ip` | Verbindet auf spezifischem Port. |
 | `ssh-copy-id user@ip` | Kopiert den Public Key auf den Server (Passwortloses Login). |
 | `ip a` | Zeigt eigene IP-Adressen und Interfaces. |
-| `ss -tulpn` | Zeigt offene Ports und lauschende Dienste (Sockets). |
+| `ss -tulpn` | Zeigt offene Ports und lauschende Dienste (Sockets). |
+
+# ledger
+1\. Core Syntax: The Journal Entry
+
+Every transaction must satisfy the **Accounting Equation** (AE) where the sum of all postings equals zero (∑\=0).
+
+Code snippet
+
+```
+YYYY-MM-DD [Status] Description
+    Account:Name:Subaccount          [Amount]  [Unit]
+    Account:Other:Subaccount         [Amount]  [Unit]
+```
+
+*   **Indentation:** At least two spaces for postings.
+    
+*   **Status Marks:** `*` for **Cleared** (C), `!` for **Pending** (P).
+    
+*   **Automatic Balancing:** You can leave **one** amount blank; the system calculates the remainder to maintain equilibrium.
+    
+
+---
+
+## 2\. Account Types (Standard Hierarchy)
+
+| Category | Account Prefix | Normal Balance | Physics Analogy |
+| --- | --- | --- | --- |
+| **Assets** | `assets:` | Debit (+) | Potential Energy (Stored) |
+| **Liabilities** | `liabilities:` | Credit (-) | External Tension (Debt) |
+| **Equity** | `equity:` | Credit (-) | System Origin / Initial State |
+| **Income** | `income:` | Credit (-) | Energy Inflow (Flux) |
+| **Expenses** | `expenses:` | Debit (+) | Energy Dissipation (Entropy) |
+
+Export to Sheets
+
+---
+
+## 3\. Advanced Notation
+
+### Comments and Metadata
+
+*   `;` or `#` or `%` starts a comment.
+    
+*   `; tag: value` defines metadata for custom filtering.
+    
+
+### Balance Assertions (BA)
+
+Force the system to validate the state at a specific point in time.
+
+Code snippet
+
+```
+2026-02-11 * Grocery Store
+    expenses:food             $50.00
+    assets:checking          $-50.00 == $1000.00  ; Fails if balance != $1000
+```
+
+### Commodities and Prices
+
+Define exchange rates between different units (e.g., Currency or Stocks).
+
+Code snippet
+
+```
+P 2026-02-11 15:00:00 AAPL $230.00  ; Price of 1 AAPL in USD
+```
+
+---
+
+## 4\. Command Line Interface (CLI) Quick Ref
+
+| Goal | Command | Key Flags |
+| --- | --- | --- |
+| **Current Totals** | `hledger bal` | `-p` (period), `-R` (real) |
+| **Transaction Log** | `hledger reg` | `-W` (weekly), `-M` (monthly) |
+| **Verify Integrity** | `hledger check` | Useful after git pull |
+| **Interactive UI** | `hledger-ui` | `--watch` (auto-reload on save) |
+| **Export Data** | `hledger print` | `-o file.csv` |
+
+Export to Sheets
+
+---
+
+## 5\. hledger-Specific Features
+
+Unlike the original **Ledger** (LGR), **hledger** (HLGR) includes specialized directives:
+
+*   **`account`**: Define account properties.
+    
+*   **`alias`**: Rename accounts on the fly.
+    
+*   **`include`**: Modularize your journal (e.g., `include 2025.journal`).
+    
+
+---
+
+## 6\. Workflow: Git + hledger
+
+Since your journal is plain text, use this workflow to maintain a **Distributed Ledger** (DL):
+
+1.  **Edit:** Update your `.journal` file.
+    
+2.  **Verify:** Run `hledger check`.
+    
+3.  **Commit:** `git commit -am "Update transactions"`
+    
+4.  **Sync:** `git pull --rebase && git push`