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Chapter 3. Running functions locally
You can run a function locally by using the kn func tool. This can be useful, for example, for testing the function before deploying it to the cluster.
3.1. Running a function locally
You can use the kn func run command to run a function locally in the current directory or in the directory specified by the --path flag. If the function that you are running has never previously been built, or if the project files have been modified since the last time it was built, the kn func run command builds the function before running it by default.
Example command to run a function in the current directory
$ kn func run
Example command to run a function in a directory specified as a path
$ kn func run --path=<directory_path>
You can also force a rebuild of an existing image before running the function, even if there have been no changes to the project files, by using the --build flag:
Example run command using the build flag
$ kn func run --build
If you set the build flag as false, this disables building of the image, and runs the function using the previously built image:
Example run command using the build flag
$ kn func run --build=false
You can use the help command to learn more about kn func run command options:
Build help command
$ kn func help run
