dreg searches for matches of a regular expression to a nucleic acid sequence.

Here is a sample session with dreg:

% dreg
Input sequence: embl:paamir
Output file [paamir.dreg]: 
Regular expression pattern: ggtacc

Mandatory qualifiers:

[-sequence] (seqall)

Sequence database USA.

[-pattern] (regexp)

Regular expression pattern.

[-outfile] (outfile)

Output filename.