DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/common/wait4x-tcp.md

wait4x tcp

Wait for TCP port(s) to become available. More information: https://github.com/wait4x/wait4x.

• Wait for a TCP port to become available:

wait4x tcp {{localhost:8080}}

• Wait for a port with a specific timeout:

wait4x tcp {{localhost:3306}} --timeout {{60s}}

• Wait for a port to become free (inverted check):

wait4x tcp {{localhost:8080}} --invert-check

• Wait for multiple ports in parallel:

wait4x tcp {{localhost:3306 localhost:6379 ...}}

• Run a command after the port becomes available:

wait4x tcp {{localhost:3306}} -- {{path/to/script.sh}}

• Wait with exponential backoff:

wait4x tcp {{localhost:8080}} --backoff-policy exponential --backoff-exponential-max-interval {{30s}}