Vay tiền online tại nhà CMND cấp tốc 24/7
This Bash command performs the following actions:
1. `cat config.yaml`: This command reads the contents of the file `config.yaml` and outputs them to the standard output stream (usually the terminal).
2. `|`: This is a pipe operator. It takes the output from the command on its left (`cat config.yaml`) and feeds it as input to the command on its right (`awk NF`).
3. `awk NF`: This command is an `awk` script that filters out lines that have no fields. Here, `NF` is an `awk` variable that represents the number of fields in a line. When `NF` evaluates to true (non-zero), `awk` considers the line to have fields, and thus it prints the entire line. When `NF` evaluates to false (zero), `awk` considers the line to have no fields, and thus it does not print the line.
So, overall, the command `cat config.yaml | awk NF` reads the contents of `config.yaml`, filters out lines that have no fields, and prints the remaining lines to the standard output. Essentially, it removes blank lines from the output.
4.8/5 (80 votes)