Squirrel command line tool manual¶
The squirrel command line tool is a front-end to the Squirrel data access infrastructure.
It offers functionality to
inspect various aspects of a data collection.
pre-scan / index file collections.
download data from online sources (FDSN web services, earthquake catalogs).
convert large data collections (file format and directory layout)
manage separate (isolated, local) environments for different projects.
manage persistent selections to speed up access to very large datasets.
squirrel tool and its subcommands are self-documenting with the
--help option. Run
squirrel without any options to get the list of
available subcommands. Run
squirrel SUBCOMMAND --help to get details about
a specific subcommand, e.g.
squirrel scan --help.
- squirrel codes - Get summary of available data codes.
- squirrel coverage - Report time spans covered.
- squirrel database - Database inspection and maintenance.
- squirrel database env - Show current Squirrel environment.
- squirrel database stats - Show information about cached meta-data.
- squirrel database files - Show paths of files for which cached meta-data is available.
- squirrel database nuts - Dump index entry summaries.
- squirrel database cleanup - Remove leftover volatile data entries.
- squirrel database remove - Remove cached meta-data of files matching given patterns.
- squirrel files - Lookup files providing given content selection.
- squirrel init - Create local environment.
- squirrel jackseis - Convert waveform archive data.
- squirrel jackseis-classic - Squirrel's adaption of classic Jackseis.
- squirrel nuts - Search indexed contents.
- squirrel operators - Print available operator mappings.
- squirrel persistent - Manage persistent selections.
- squirrel remove - Remove entries from selection or database.
- squirrel scan - Scan and index files and directories.
- squirrel snuffler - Experimental Squirrel-powered Snuffler.
- squirrel stationxml - Export station metadata as StationXML.
- squirrel summon - Fill local cache.
- squirrel template - Print configuration snippets.
- squirrel update - Update remote sources inventories.
Options shared between subcommands are grouped into three categories:
General options include
--loglevelto select the program’s verbosity and
--progressto control how progress status is indicated. These are provided by all of Squirrel’s subcommands.
Data collection options control which files and other data sources should be aggregated to form a dataset. Use the
--addoption to add files and directories. Further options are available to include/exclude files by regular expression patterns, to restrict to use selected content kinds only (waveform, station, channel, response, event), to create persistent data selections and more. Finally, the
--datasetoption is provided to configure the dataset conveniently in a YAML file rather than repeatedly with the many command line options. Using
--datasetincludes the possibility to add online data sources.
Data query options are used to restrict processing/presentation to a subset of a data collection. They have no influence on the data collection itself, only on what is shown. It is possible to query by time interval (
--time), channel/station code pattern (
--codes), and content kinds (