--- type: collection section: snippets generated_at: 2026-04-11T07:40:44+02:00 total_entries: 9 tag_filter: CLI --- # Snippets ## Remove Duplicate Homebrew Apache launchd Service --- type: snippet id: qbidnuc15pn3jbjs title: > Remove Duplicate Homebrew Apache launchd Service url: > https://www.jakubpelak.com/snippets/duplicate-homebrew-apache-service section: snippets tags: - Homebrew - macOS - Apache - launchd - CLI published_at: 2026-02-19 --- If `brew services start httpd` succeeds but `brew services list` shows an error with `root` as the user, you likely have a leftover system LaunchDaemon from a previous `sudo brew services` invocation alongside the user LaunchAgent. Remove the system daemon to resolve the conflict. ```bash brew services stop httpd || true sudo brew services stop httpd || true sudo launchctl bootout system /Library/LaunchDaemons/homebrew.mxcl.httpd.plist 2>/dev/null || true sudo rm -f /Library/LaunchDaemons/homebrew.mxcl.httpd.plist brew services cleanup brew services start httpd ``` After this, `brew services list` should show httpd as started under your user. ## Delete Local Git Branches Whose Remote Was Deleted --- type: snippet id: le540vfe3hsou4yo title: > Delete Local Git Branches Whose Remote Was Deleted url: > https://www.jakubpelak.com/snippets/git-branches-remote-deleted section: snippets tags: - Git - Cleanup - Automation - CLI published_at: 2026-01-31 --- When working with feature branches, it’s easy for your local repository to accumulate branches that were already deleted on the remote. This snippet safely removes all local branches whose remote tracking branch no longer exists. ```sh git fetch -p && git branch -vv | awk '/: gone]/{print $1}' | xargs -r git branch -d ```` If you want to remove them regardless of merge status, replace `-d` with `-D`. ## Find Dirty Git Repositories --- type: snippet id: yqeihixirgfk24gh title: Find Dirty Git Repositories url: > https://www.jakubpelak.com/snippets/find-dirty-git-repositories section: snippets tags: - Git - Automation - CLI - Script published_at: 2025-08-08 --- A tiny shell script that recursively scans a directory for Git repositories with uncommitted changes, nicknamed `dirgit`—a play on words combining "directory", "dirty", and "git". ```bash #!/bin/bash # Use current directory or first argument ROOT="${1:-$(pwd)}" # Find all Git repositories and check for dirty state find "$ROOT" -type d -name ".git" 2>/dev/null | while read -r gitdir; do repo="$(dirname "$gitdir")" cd "$repo" || continue if [[ -n $(git status --porcelain) ]]; then echo "$repo" fi done ```` Save it as `dirgit` (or any name you prefer), make it executable (`chmod +x dirgit`), and place it in `/usr/local/bin` or `~/bin` to use it globally. ### Usage ```bash dirgit # scan current directory dirgit ~/code # scan a specific directory ``` ## How to Reset a Single File in Git --- type: snippet id: g4togielbs9vkxus title: How to Reset a Single File in Git url: > https://www.jakubpelak.com/snippets/how-to-reset-single-file-in-git section: snippets tags: - Git - CLI published_at: 2025-07-15 --- If you've made changes to a file and want to discard them, you can use `git checkout` to restore it to the version from the last commit. This is useful when you want to undo changes that haven't been staged yet. ```sh git checkout -- ``` To restore a file from a different branch, you can use: ```sh git checkout -- ``` ## Delete All Local Branches Except main --- type: snippet id: RYVuj6j1rJ49DePN title: Delete All Local Branches Except main url: > https://www.jakubpelak.com/snippets/delete-all-local-branches-except-main section: snippets tags: - Git - Automation - CLI published_at: 2025-06-26 --- A handy one-liner to clean up all your local Git branches except `main`. It uses `-D` to **force-delete** each branch, even if it hasn’t been merged—so be careful. If you want a safer version, replace `-D` with `-d` to only delete branches that have been merged. ```sh git branch | grep -v "main" | xargs git branch -D ``` Credit: (link: https://coderwall.com/p/x3jmig/remove-all-your-local-git-branches-but-keep-master) ## Convert Image to WebP --- type: snippet id: CzfLwMhehVwtbw4R title: Convert Image to WebP url: > https://www.jakubpelak.com/snippets/convert-image-to-webp section: snippets tags: - Image - WebP - CLI published_at: 2025-06-06 --- Quickly convert a PNG image to the modern WebP format using the `cwebp` CLI tool. This command sets the output quality to 80%, striking a good balance between file size and visual clarity—perfect for optimizing images for the web. ```bash cwebp -q 80 image.png -o image.webp ``` ## Switch remote HTTPS to SSH in Git --- type: snippet id: f4NDATop1pkniG9P title: Switch remote HTTPS to SSH in Git url: > https://www.jakubpelak.com/snippets/switch-remote-https-to-ssh-in-git section: snippets tags: - Git - SSH - HTTPS - CLI published_at: 2025-05-25 --- Quick snippet to switch a Git remote URL from HTTPS to SSH for easier authentication with SSH keys. ```sh git remote -v git remote set-url origin git@github.com:USERNAME/REPOSITORY.git ``` Credit: (link: https://docs.github.com/en/get-started/getting-started-with-git/managing-remote-repositories) ## Merge Video and Audio with FFmpeg --- type: snippet id: 3y8oc2ShoNLSpS9R title: Merge Video and Audio with FFmpeg url: > https://www.jakubpelak.com/snippets/merge-video-and-audio-with-ffmpeg section: snippets tags: - Video - FFmpeg - Audio - CLI published_at: 2025-03-13 --- This simple FFmpeg command merges a video file `video.mp4` and an audio file `audio.mp4` without re-encoding. It copies both streams as they are, ensuring fast processing and no quality loss. ```sh ffmpeg -i video.mp4 -i audio.mp4 -c:v copy -c:a copy output.mp4 ``` ## Rename PNG Files to Random UUIDs --- type: snippet id: kOwznHLJJRGeQ9R2 title: Rename PNG Files to Random UUIDs url: > https://www.jakubpelak.com/snippets/rename-png-files-to-random-uuids section: snippets tags: - Automation - CLI - UUID - Script published_at: 2025-03-09 --- A simple Bash script that renames all `.png` files in the current directory using randomly generated lowercase UUIDs. It ensures `uuidgen` is installed before execution and skips renaming if no PNG files are found. ```bash #!/bin/bash # Check if 'uuidgen' command is available if ! command -v uuidgen &> /dev/null; then echo "uuidgen command not found. Please install it first." exit 1 fi # Loop through all .png files in the current directory for file in *.png; do # Skip if no PNG files found if [ ! -e "$file" ]; then echo "No PNG files found in the current directory." exit 0 fi # Generate a random UUID v4 and convert to lowercase uuid=$(uuidgen | tr '[:upper:]' '[:lower:]') # Rename the file mv "$file" "${uuid}.png" done echo "All PNG files have been renamed to random lowercase UUIDs." ```