Bash Read Comma Separated CSV File on Linux / Unix

To read a comma-separated CSV file in Bash on a Linux or Unix system, you can use a combination of the while loop and the read command.

The while loop allows you to loop through the lines of the CSV file, and the read command allows you to split each line into fields based on the comma separator.

Here is an example of how you can use a while loop and the read command to read a CSV file in Bash:

# Open the CSV file
while IFS=',' read -r field1 field2 field3 field4
do
  # Process the fields
  echo "Field 1: $field1"
  echo "Field 2: $field2"
  echo "Field 3: $field3"
  echo "Field 4: $field4"
done < file.csv

This will loop through the lines of the CSV file and split each line into fields based on the comma separator. The fields will be stored in the variables field1, field2, field3, and field4, and can be processed as needed.

Note that this example assumes that the CSV file has four fields per line. If the CSV file has a different number of fields per line, you will need to adjust the number of variables in the read command accordingly.

Overall, the while loop and the read command are useful tools for reading a CSV file in Bash on a Linux or Unix system. They allow you to easily loop through the lines of the CSV file and split each line into fields based on the comma separator.