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This Bash command processes the contents of a YAML file named "config.yaml" and uses the `awk` command to filter out lines that are not empty. Let's break down the command:
1. `cat config.yaml`: This part of the command uses the `cat` command to display the contents of the "config.yaml" file in the terminal.
2. `|`: This is a pipe symbol, which is used to pass the output of the preceding command (`cat config.yaml`) as input to the next command (`awk NF`).
3. `awk NF`: This part of the command uses the `awk` command to process the input (output of `cat config.yaml`). `NF` in `awk` stands for the number of fields, and when used alone, it evaluates to true for lines that are not empty. Therefore, `awk NF` effectively filters out lines that do not have any content, leaving only non-empty lines.
In summary, the command takes the contents of "config.yaml," displays them using `cat`, and then uses `awk` to filter and display only the non-empty lines from the YAML file.
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