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Notes
  • README
  • ansible
    • Literal curly braces (raw)
  • bash
    • Case statement
    • Change quote style mid-string
    • Comparing versions
    • Hiding credentials on the command line
    • Directory of script
    • Using find to run a command on multiple files
    • Getting the line number of the nth match
    • Getopts
    • Parsing output with long lines using less
    • Print line at number
    • Remove final newline
    • Reading content between markers
    • Determine if a script was sourced or executed
    • Bash substring
    • Run a function on interrupt or error
    • Reference variable by name
  • chrome
    • Bypassing Chrome's NET::ERR_CERT_INVALID page
  • css
    • box-sizing: border-box
    • The currentColor keyword
    • Wrapper taking up at least 100% height
    • Using margin: auto; for centering
    • Margin-collapse
    • Which unit to use?
    • Hiding elements
  • git
    • Conditional git config includes
    • Viewing the evolution of a line or function
    • Name of current branch
    • Get the path to the repository root
    • Replaying a set of changes on a specific branch
    • Hide file from git diff output
    • Listing untracked files with git status
  • github
    • Setting up GitHub Actions
  • groovy
    • Appending items to a list
  • kubernetes
    • Waiting for a pod to be ready
  • make
    • Passing arguments to make rules
    • Running make in a set of subdirectories
  • npm
    • Update a value in a project's .npmrc
  • podman
    • Target last container
  • rust
    • The match operator
    • Unwrapping a Result
  • tmux
    • New window with prompt
  • tools
    • Running ngrok in the background
    • Using entr to react to file changes
  • typescript
    • Inferring the type of elements in an array
  • vim
    • The command-line window
    • Populate quickfix list with eslint errors
    • Visual increment
    • Opening a list of files in split windows
    • Insert line above matched line
    • Spelling
    • The tabular plugin
    • Populate quickfix list with tsc errors
  • yaml
    • Yaml multiline strings
  • zsh
    • Lazy loading command setup
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Last updated 3 years ago

By default, ngrok launches an interactive session. This is great for local development, but not if we're using it in an automated fashion (e.g. in CI). We can use this method to run ngrok in the background, and to acquire the randomly generated public url:

Source:

PreviousNew window with promptNextUsing entr to react to file changes
  1. tools

Running ngrok in the background

ngrok/issues/57
# run ngrok in the background
ngrok http 80 --log=stdout >/dev/null &
# get the public url
PUBLIC_URL=$(curl -sS http://localhost:4040/api/tunnels | jq -r '.tunnels[0].public_url')