The grg program can parse an input file in delimited ascii format
and load it internally as an ordinary database file. All the
normal grg operations such as sorting, filtering, field evaluating,
and equates can be used. This section gives an overview of how to use this
feature.
The simplest way is to use the built in patterns. These make grg process
input text in the same way as awk, so that each line of input is treated
as a record and each whitespace separated group on a line is treated as a field
of the record. Like awk the field delimiter can be changed by using an
environment variable.
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