17.1 Invoking recinf

recinf reads the given rec files (or the data from standard input if no file is specified) and prints a summary of the record types contained in the input.

Synopsis:

recinf [option]… [file]…

The default behavior is to emit a line per record type in the input containing its name and the number of records of that type:

$ recinf hackers.rec tasks.rec
25 Hacker
102 Task

If the input contains anonymous records, i.e. records that are before the first record descriptor, the corresponding output line won’t have a type name:

$ recinf data.rec
10

In addition to the common options described earlier the program accepts the following options.

‘-t type’

‘--type=type’

Select records of a given type only.

‘-d’

‘--descriptor’

Print all the record descriptors present in the file.

‘-n’

‘--names-only’

Output just the names of the record types found in the input. If the input contains only anonymous records then output nothing.

‘-S’

‘--print-sexps’

Print the data in the form of sexps (Lisp expressions) instead of rec format. This option can be useful for, of course, Lisp programs.