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The deno install command installs dependencies for a project or installs executable scripts globally.

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Usage

# Install project dependencies
deno install

# Install specific entrypoints
deno install [ENTRYPOINTS]...

# Install globally with -g flag
deno install -g [OPTIONS] [MODULE_URL]

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Local Installation

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Install all dependencies

Install all dependencies from deno.json and package.json: 
deno install
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--lockfile-only
boolean
Only update the lockfile without installing packages

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Install specific entrypoints

Cache specific modules and their dependencies: 
deno install main.ts
deno install src/server.ts src/worker.ts

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Global Installation

Install executable scripts globally using the -g or --global flag. 
deno install -g [OPTIONS] [MODULE_URL]

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Global Installation Flags

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-g, --global
boolean
Install as a global executable script
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-n, --name
string
Executable file name
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--root
string
Installation root directory (defaults to $HOME/.deno)
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-f, --force
boolean
Forcefully overwrite existing installation
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--compile
boolean
Compile the script into a standalone executable

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Permission flags

When installing globally, you can specify permissions that will be embedded in the installed script:
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--allow-read
string
Allow file system read access
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--allow-write
string
Allow file system write access
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--allow-net
string
Allow network access
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--allow-env
string
Allow environment access
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--allow-run
string
Allow running subprocesses
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--allow-sys
string
Allow access to system information
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--allow-all
boolean
Allow all permissions

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Examples

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Local installation examples

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Install all dependencies

deno install

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Install with lockfile update only

deno install --lockfile-only

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Install specific entrypoints

deno install main.ts
deno install src/app.ts src/cli.ts

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Global installation examples

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Install a script globally

deno install -g --allow-net --allow-read jsr:@std/http/file-server

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Install with custom name

deno install -g -n serve --allow-net --allow-read jsr:@std/http/file-server

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Install from URL

deno install -g --allow-net https://deno.land/std/http/file_server.ts

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Install with all permissions

deno install -g --allow-all https://deno.land/x/deploy/deployctl.ts

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Install to custom location

deno install -g --root /usr/local --allow-net my_server.ts

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Force reinstall

Overwrite existing installation: 
deno install -g -f --allow-net --allow-read jsr:@std/http/file-server

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Install as compiled executable

Create a standalone binary: 
deno install -g --compile --allow-net my_app.ts

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Install with script arguments

deno install -g --allow-read my_tool.ts -- --port 8080

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Installation Directory

Global installations are placed in:
  • Default: $HOME/.deno/bin
  • Custom: Specified by --root flag or DENO_INSTALL_ROOT environment variable
Make sure this directory is in your PATH: 
# Add to your shell profile (.bashrc, .zshrc, etc.)
export PATH="$HOME/.deno/bin:$PATH"

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Migration from Deno < 3.0

In Deno 3.0, the deno install command behavior changed:
  • Use -g flag for global installation (previously the default)
  • Script arguments now require -- separator
  • Local installation is now the default when -g is not specified
# Old (Deno < 3.0)
deno install --allow-net https://deno.land/std/http/file_server.ts arg1 arg2

# New (Deno >= 3.0)
deno install -g --allow-net https://deno.land/std/http/file_server.ts -- arg1 arg2

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