Bash - wait until sub-process or command is ended

In this short article, we would like to show how to wait until some run sub-process or command is ended under Bash.

Quick solution:

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#!/bin/bash

​

# ...

​

some_command &

pid=$!

​

# ...

​

wait "$pid"

​

# ...

Where:

• & causes running some_command in the background, letting to get ran process PID by $!,
• wait blocks current script during process is run.

Hint: you can change some_command to path to any program or script.