commit 9a9fcfcacf4a2ea086ae2295db27a0a86b2bf848
Author: Grok <grok@mymx.me>
Date:   Sat Aug 9 13:22:24 2025 +0000

    Initial commit of various cheatsheets

diff --git a/git-cheatsheet.md b/git-cheatsheet.md
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+# Git Cheatsheet
+
+This is a quick reference for common Git commands.
+
+## Configuration
+- `git config --global user.name "Your Name"`: Set your username
+- `git config --global user.email "your.email@example.com"`: Set your email
+- `git config --list`: View configuration
+
+## Creating Repositories
+- `git init`: Initialize a new Git repository in the current directory
+- `git clone <repository-url>`: Clone an existing repository
+
+## Basic Snapshotting
+- `git status`: Show the working tree status
+- `git add <file>`: Add a file to the staging area
+- `git add .`: Add all changes in the current directory to the staging area
+- `git commit -m "commit message"`: Commit staged changes with a message
+- `git commit -a -m "commit message"`: Commit all tracked changes with a message (skips staging)
+
+## Branching and Merging
+- `git branch`: List all branches
+- `git branch <branch-name>`: Create a new branch
+- `git checkout <branch-name>`: Switch to a branch
+- `git checkout -b <branch-name>`: Create and switch to a new branch
+- `git merge <branch-name>`: Merge a branch into the current branch
+- `git branch -d <branch-name>`: Delete a branch
+
+## Remote Repositories
+- `git remote add <name> <url>`: Add a remote repository (e.g., origin)
+- `git push <remote> <branch>`: Push changes to a remote branch
+- `git pull <remote> <branch>`: Pull changes from a remote branch
+- `git fetch`: Fetch changes from remote without merging
+
+## Inspection and Comparison
+- `git log`: Show commit history
+- `git log --oneline`: Show commit history in one line per commit
+- `git diff`: Show changes between commits, commit and working tree, etc.
+- `git show <commit>`: Show details of a commit
+
+## Undoing Changes
+- `git reset --hard`: Reset to the last commit, discarding changes
+- `git revert <commit>`: Create a new commit that undoes a previous commit
+- `git checkout -- <file>`: Discard changes in a file
+
+## Stashing
+- `git stash`: Stash changes in a dirty working directory
+- `git stash apply`: Apply stashed changes
+- `git stash list`: List stashed changes
+
+For more details, refer to the official Git documentation: https://git-scm.com/docs
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diff --git a/removing-files-from-git-history.md b/removing-files-from-git-history.md
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+# Removing Files from Git History
+
+This document outlines a secure, resource-efficient method to completely remove a file (and its traces) from a Git repository's history using `git-filter-repo`. This is useful for privacy-sensitive operations, such as removing accidentally committed secrets or sensitive data.
+
+## Prerequisites
+- Git installed.
+- `git-filter-repo` installed (install via `sudo apt install git-filter-repo` on Debian-based systems if needed).
+- Admin access to the repository and remote (e.g., Gitea).
+
+## Steps
+1. **Verify the File in History**:
+   ```
+   cd /path/to/repo
+   git log -- <file-path>
+   ```
+   This lists commits involving the file.
+
+2. **Remove the File from History**:
+   ```
+   git filter-repo --path <file-path> --invert-paths
+   ```
+   - `--invert-paths` excludes the specified path from all commits.
+   - This rewrites history and removes remotes as a safety measure.
+
+3. **Re-add Remote (if removed)**:
+   ```
+   git remote add origin <remote-url>
+   ```
+
+4. **Force Push Changes**:
+   ```
+   git push origin --force --all
+   ```
+   - Use `--force` to overwrite remote history. Caution: This can break shared repos.
+
+5. **Verify Removal**:
+   ```
+   git log -- <file-path>
+   ```
+   No output means the file is gone.
+
+## Security Notes
+- Always back up your repo before rewriting history.
+- Use secure remotes (e.g., SSH).
+- Avoid if the repo is public or has multiple collaborators without coordination.
+- Follow least privilege: Run without sudo unless necessary.
+
+This method is lightweight and respects resource constraints (low RAM/CPU usage).
+
+Last updated: [Current Date]
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diff --git a/stratis_cheatsheet.md b/stratis_cheatsheet.md
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+# Stratis Cheatsheet for RHEL 10
+
+This cheatsheet covers common Stratis commands for storage management on Red Hat Enterprise Linux 10, based on official documentation and recent guides (e.g., RHEL 9/10 RHCSA resources from 2025). Stratis simplifies local storage with pools, thin provisioning, snapshots, and encryption. It builds on LVM and XFS.
+
+**Prerequisites**: Ensure block devices are available and not in use. Stratis requires stratisd service running.
+
+## Installation
+- Install packages: `sudo dnf install stratisd stratis-cli`
+- Enable and start service: `sudo systemctl enable --now stratisd`
+- Verify: `sudo systemctl status stratisd`
+
+## Pool Management
+- Create a pool: `sudo stratis pool create <pool_name> /dev/<blockdev> [/dev/<another>]`
+  - Example: `sudo stratis pool create mypool /dev/sdb`
+- List pools: `sudo stratis pool list`
+- Destroy pool: `sudo stratis pool destroy <pool_name>` (unmount filesystems first)
+- Add data device: `sudo stratis pool add-data <pool_name> /dev/<blockdev>`
+- Initialize cache: `sudo stratis pool init-cache <pool_name> /dev/<cachedev>`
+- Add cache device: `sudo stratis pool add-cache <pool_name> /dev/<cachedev>`
+
+## Filesystem Management
+- Create filesystem: `sudo stratis filesystem create <pool_name> <fs_name>`
+  - Example: `sudo stratis filesystem create mypool myfs`
+- List filesystems: `sudo stratis filesystem list [<pool_name>]`
+- Destroy filesystem: `sudo stratis filesystem destroy <pool_name> <fs_name>`
+- Mount: Filesystems are at `/stratis/<pool_name>/<fs_name>`. Use `sudo mount /stratis/<pool_name>/<fs_name> /mnt/point`
+- Unmount: `sudo umount /mnt/point`
+
+## Snapshot Management
+- Create snapshot: `sudo stratis filesystem snapshot <pool_name> <source_fs> <snapshot_name>`
+  - Example: `sudo stratis filesystem snapshot mypool myfs mysnapshot`
+- List snapshots: Included in `stratis filesystem list`
+- Revert to snapshot: Destroy current FS and rename snapshot, or use as needed (snapshots are writable)
+- Destroy snapshot: `sudo stratis filesystem destroy <pool_name> <snapshot_name>`
+
+## Encryption
+Stratis supports encrypted pools (available in RHEL 9+ and confirmed for 10).
+- Create encrypted pool: `sudo stratis key set --keyfile-path <keyfile> <key_desc>`
+- Then: `sudo stratis pool create --key-desc <key_desc> <pool_name> /dev/<blockdev>`
+- Unlock pool: `sudo stratis pool unlock <key_desc>`
+- List keys: `sudo stratis key list`
+- For TPM: Use `--capture-key` or specific options for binding.
+
+## Monitoring and Status
+- List block devices: `sudo stratis blockdev list [<pool_name>]`
+- Daemon rediscover: `sudo stratis daemon rediscover`
+- Version: `sudo stratis daemon version`
+- Check service: `sudo systemctl status stratisd`
+- Debug: `sudo journalctl -u stratisd`
+
+## Advanced Features
+- Thin provisioning: Enabled by default; overprovision with care (pools can grow dynamically).
+- Expand pool: Add devices with `add-data` or `add-cache`.
+- Rename pool: Not directly supported; export/import or recreate.
+- Integration with VDO: Can be used underlying, but Stratis manages on top.
+
+## Tips and Best Practices
+- Always back up data before destructive operations.
+- Monitor pool usage: Use `stratis pool list` for free space.
+- For RHEL 10 specifics: Commands are consistent with RHEL 9; check `man stratis` for updates.
+- Resources: Red Hat Documentation (Chapter on Stratis in Managing File Systems), stratis-storage.github.io.
+- Common error: If pool not found, run `stratis daemon rediscover`.
+
+For more details, refer to `man stratis` or Red Hat's official docs.
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diff --git a/vim_cheatsheet.md b/vim_cheatsheet.md
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+# Vim Cheatsheet
+
+This is a quick reference guide for common Vim commands. Vim has several modes: Normal (default), Insert, Visual, and Command-line.
+
+## Modes
+- **Normal Mode**: Default mode for navigation and commands (press `Esc` to return).
+- **Insert Mode**: For typing text (enter with `i`, `a`, etc.).
+- **Visual Mode**: For selecting text (enter with `v`, `V`, or `Ctrl-v`).
+- **Command Mode**: For extended commands (enter with `:` from Normal mode).
+
+## Basic Navigation (Normal Mode)
+- `h` / `j` / `k` / `l`: Move left/down/up/right.
+- `w` / `b`: Jump to next/previous word.
+- `0` / `$`: Start/end of line.
+- `gg` / `G`: Top/bottom of file.
+- `Ctrl-f` / `Ctrl-b`: Page down/up.
+- `{number}G`: Go to line {number}.
+
+## Editing Commands (Normal Mode)
+- `i`: Insert before cursor.
+- `a`: Append after cursor.
+- `o` / `O`: New line below/above.
+- `x`: Delete character under cursor.
+- `dd`: Delete current line.
+- `yy`: Yank (copy) current line.
+- `p` / `P`: Paste after/before cursor.
+- `u`: Undo last change.
+- `Ctrl-r`: Redo.
+- `.`: Repeat last command.
+
+## Visual Mode
+- `v`: Start visual selection (character-wise).
+- `V`: Start visual selection (line-wise).
+- `Ctrl-v`: Start visual block selection.
+- Use navigation to select, then apply commands like `d` (delete), `y` (yank).
+
+## Saving and Quitting (Command Mode)
+- `:w`: Save file.
+- `:q`: Quit (if no changes or saved).
+- `:wq` or `ZZ`: Save and quit.
+- `:q!`: Quit without saving.
+- `:wqa`: Save and quit all.
+
+## Search and Replace
+- `/pattern`: Search forward for pattern.
+- `?pattern`: Search backward.
+- `n` / `N`: Next/previous match.
+- `:%s/old/new/g`: Replace all occurrences of 'old' with 'new' in file.
+- `:s/old/new/`: Replace in current line.
+
+## Other Useful Commands
+- `:set number`: Show line numbers.
+- `:set nonumber`: Hide line numbers.
+- `:help {topic}`: Open help for topic.
+- `Ctrl-w v` / `Ctrl-w s`: Split window vertically/horizontally.
+- `Ctrl-w w`: Switch between windows.
+
+## Tips
+- Use counts: e.g., `5dd` deletes 5 lines.
+- Combine motions: e.g., `dw` deletes to end of word.
+- Record macros: `q{letter}` to start, `q` to stop, `@{letter}` to replay.
+- Vim is highly customizable via `.vimrc`.
+
+For more, type `:help` in Vim!
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