One Liner to Download the Latest Release from Github Repo

One Liner to Download the Latest Release from Github Repo.md

• Use curl to get the JSON response for the latest release
• Use grep to find the line containing file URL
• Use cut and tr to extract the URL
• Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \
| wget -qi -

for filtring and download something like beta release

curl -sL https://api.github.com/repos/telegramdesktop/tdesktop/releases
| jq -r '.[] | select(.prerelease==true) | .assets[] | select(.browser_download_url | contains("tar.xz")) | .browser_download_url'
| wget -i-

for the latest version with a known file naming scheme:

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | grep -iP 'location.*tag' | grep -oP '\d+\.\d+\.\d+' | tail -1) \
&& curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

for the latest version with a known file naming scheme:

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | grep -iP 'location.*tag' | grep -oP '\d+\.\d+\.\d+' | tail -1) \
&& curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

Removed the double grep, with a sed

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | sed '/location: .*\/tag\//!d; s///' | tail -1) &&
curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

for the latest version with a known file naming scheme:

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | grep -iP 'location.*tag' | grep -oP '\d+\.\d+\.\d+' | tail -1) \
&& curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

Removed the double grep, with a sed

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | sed '/location: .*\/tag\//!d; s///' | tail -1) &&
curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

++ case-insensitive location: match
++ remove regex escapes

PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | sed '\|location:.*/tag/|I!d; s|||' | tail -1) \
&& curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

Actually instead of sed I could have just merge the two greps directly, using perl '\K' regex escape!

 PATCHELF_VERSION=$(curl -sLI https://github.com/NixOS/patchelf/releases/latest | grep -ioP 'location.*/tag/\K\d+\.\d+\.\d+' | tail -1) \
&& curl -sL --output patchelf.tar.gz https://github.com/NixOS/patchelf/releases/download/${PATCHELF_VERSION}/patchelf-${PATCHELF_VERSION}-x86_64.tar.gz

There are lots of ways to skin a cat, and what method you use depends
on what you want that skin for, and how messy you like the results!
                                                   -- Anthony Thyssen

Not sure why everyone is using grep when sed can do everything.

curl -s https://api.github.com/repos/<user>/<repo>/releases/latest | sed -n 's/"browser_download_url": //p' | xargs wget

or

curl -s https://api.github.com/repos/<user>/<repo>/releases/latest | sed -n 's/"browser_download_url": "\(.*\)"$/\1/p' | wget -i-