cdb - display cql data files

cdb displays cql(1) and cdb(3) data files. Input data information is optional if the input is self describing. Otherwise the default input format is flat, the default input schema is best guess, and the default input comment is empty. The default output format is flat, the default output schema is the same as the input schema with external types and virtuals omitted, and the default output comment is the same as the input comment.

-c, --count

Print the total number of records on exit.

-d, --debug=level

Set the debug trace level. Higher levels produce more output.

-h, --identify

Display header identification information and exit.

-i, --input[=options...]

The following options describe the input data. Options describe the input by default. The option value may be omitted.

-l, --library=lib

lib is loaded as a runtime dll. lib must define the function cdb_init . See cdb(3).

-m, --methods

List all available methods and exit.

-o, --output[=options...]

The following options describe the output data. The option value may be omitted.

-B, --bufsize=size

Sets the data io buffer size to size.

-C, --comment=string

Sets the data comment to string.

-D, --details=string

Sets the method details to string.

-X, --dump

Enables record level trace messages.

-F, --format=name

The data format (method). Formats can be composed using a : separated list of these names:

cdb

For sparse records. pzip may perform better.

flat

Delimiter separated or fixed width fields, terminator separated or fixed length records.

gzip

gzip(1) compression.

pzip

pzip(1) compression.

vdelta

vdelta(1) differencing and/or compression.

-H, --header

Generate and/or read data identification header.

-M, --map=name

Set the record data map to name.

-P, --pack

Set the CDB_PACK hint.

-R, --raw

Display raw record data.

-S, --schema=name

Set the record data schema to name composed of:

TBD

TBD

-E, --terminated

An otherwise fixed length record also has a record terminator.

-T, --test=mask

Add the implementation defined mask to the data/library test mask.

-V, --verbose

Enable verbose trace messages.

-W, --watch=count

Enable --dump and --verbose after count records are processed.

cql(1), gzip(1), od(1), pzip(1), vdelta(1), cdb(3)

version

cdb (AT&T Research) 1999-05-01

author

Glenn Fowler <gsf@research.att.com>

copyright

Copyright © 1991-2012 AT&T Intellectual Property

license

http://www.eclipse.org/org/documents/epl-v10.html