awk Built-in Variables FS - Field Separator
Example
Used by awk to split each record into multiple fields:
echo "a-b-c
d-e-f" | awk 'BEGIN {FS="-"} {print $2}'
will result in:
b
e
The variable FS can also be set using the option -F:
echo "a-b-c
d-e-f" | awk -F '-' '{print $2}'
By default, the fields are separated by whitespace (spaces and tabs) and multiple spaces and tabs count as a single separator.
