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Benjamin Bernard
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recs-frommultire --help-all

 Help from: --help-basic:
 Usage: recs-frommultire <args> [<files>]
    Match multiple regexes against each line of input (or lines of <files>). Various parameters control when the accumulated fields are flushed to output as a record and which, if any, fields are cleared when the record is flushed.
    By default regexes do not necessarily flush on either side, would-be field collisions cause a flush, EOF causes a flush if any fields are set, and all fields are cleared on a flush.
    --no-flush-regex|--regex|--re <regex>  Add a normal regex.
    --pre-flush-regex|--pre <regex>        Add a regex that flushes before interpretting fields when matched.
    --post-flush-regex|--post <regex>      Add a regex that flushes after interpretting fields when matched.
    --double-flush-regex|--double <regex>  Add a regex that flushes both before and after interprettying fields when matched.
    --clobber                              Do not flush records when a field from a match would clobber an already existing field and do not flush at EOF.
    --keep-all                             Do not clear any fields on a flush.
    --keep <fields>                        Do not clear this comma separated list of fields on a flush.
    --filename-key|fk <keyspec>            Add a key with the source filename (if no filename is applicable will put NONE)
   Help Options:
       --help-all       Output all help for this script
       --help           This help screen
       --help-keyspecs  Help on keyspecs, a way to index deeply and with regexes
    <regex> - Syntax is: '<KEY1>,<KEY2>=REGEX'. KEY field names are optional. The key names may be key specs, see '--help-keyspecs' for more. Field names may not be keygroups. If field matches $NUM, then that match number in the regex
    will be used as the field name
    Typical use case one: parse several fields on separate lines
       recs-frommultire --re 'fname,lname=^Name: (.*) (.*)$' --re 'addr=^Address: (.*)$'
    Typical use case two: some fields apply to multiple records ("department" here)
       recs-frommultire --post 'fname,lname=^Name: (.*) (.*)$' --re 'department=^Department: (.*)$' --clobber --keep team
 Help from: --help-keyspecs:
    A key spec is short way of specifying a field with prefixes or regular expressions, it may also be nested into hashes and arrays. Use a '/' to nest into a hash and a '#NUM' to index into an array (i.e. #2)
    An example is in order, take a record like this:
      {"biz":["a","b","c"],"foo":{"bar 1":1},"zap":"blah1"}
      {"biz":["a","b","c"],"foo":{"bar 1":2},"zap":"blah2"}
      {"biz":["a","b","c"],"foo":{"bar 1":3},"zap":"blah3"}
    In this case a key spec of 'foo/bar 1' would have the values 1,2, and 3 in the respective records.
    Similarly, 'biz/#0' would have the value of 'a' for all 3 records
    You can also prefix key specs with '@' to engage the fuzzy matching logic
    Fuzzy matching works like this in order, first key to match wins
      1. Exact match ( eq )
      2. Prefix match ( m/^/ )
      3. Match anywehre in the key (m//)
    So, in the above example '@b/#2', the 'b' portion would expand to 'biz' and 2 would be the index into the array, so all records would have the value of 'c'
    Simiarly, @f/b would have values 1, 2, and 3
    You can escape / with a \. For example, if you have a record:
    You can address that key with foo\/bar

See Also

RecordStream(3) - Overview of the scripts and the system
recs-examples(3) - A set of simple recs examples
recs-story(3) - A humorous introduction to RecordStream
SCRIPT --help - every script has a --help option, like the output above