When downloading dependencies, keep the following best practices in mind:
If package managers exist, why use shell dep download? Here are four critical scenarios:
To avoid re-downloading the same dependency multiple times, set up a local cache mirror: shell dep download
# For pip
pip install --download-cache ~/.pip/cache
To master shell dep download, you must know your tools:
| Tool | Best For | Example |
| :--- | :--- | :--- |
| wget | Recursive downloads, mirrors | wget -r -l1 -np http://site.com/deps/ |
| curl | APIs, authentication, complex headers | curl -L -o dep.tar.gz https://example.com/dep.tar.gz |
| aria2 | Parallel downloads (very fast) | aria2c -x 16 https://example.com/large.deb |
| dpkg/rpm | Local install without repository | dpkg -i ./downloaded.deb | But for reusable tools
It’s not always evil. For:
But for reusable tools? Download explicitly, verify, and cache. The "dep" refers to "dependencies" – the building
cd "$DEP_DIR"
sha256sum -c "$BINARY_NAME.sha256"
cd -
At its core, "shell dep download" is the action of using a shell interface (like Bash, Zsh, or Fish) to fetch external libraries, packages, or binaries that your software project requires to run.
This process is distinct from using a graphical package manager. Instead, it involves:
The "dep" refers to "dependencies" – the building blocks your code relies on. The "download" is the retrieval phase, which may also include verification, extraction, and installation.