Cut channels from frames in frame files.
lalfr-cut list [file ...]
The lalfr-cut utility cuts out selected channels (as specified by list) from each file and writes frames containing these channels only to the standard output. If no file argument is specified, or if a file argument is a single dash (-), lalfr-cut reads from the standard input. The channels specified by list are comma-delimited channel names.
To cut the channels chan1 and chan2 from file framefile.gwf and output frames to standard output:
lalfr-cut chan1,chan2 framefile.gwf