# The `Wait` commands

It is a command that waits for completing any running process of given id. if the process id is not given then it waits for all current child processes to complete.

## Example

This example shows how the `wait`  command works : <br />

**Step-1**:

Create a file named "wait_example.sh" and add the following script to it.

```
#!/bin/bash
echo "Wait command" &
process_id=$!
wait $process_id
echo "Exited with status $?"
```

**Step-2**:

Run the file with bash command.

```
$ bash wait_example.sh
```