NGDC-ids

Can be one or more of five kinds of specifiers:

(See mgd77info -L for agency and vessel codes). If no file extension is given then we search for files with one of the four known extensions. The search order (and the extensions) tried is MGD77+ (".nc"), MGD77T (".m77t"), MGD77 (".mgd77" ) and plain text file (".dat"). Use -I to ignore one or more of these file types). Cruise files will be looked for first in the current directory and second in all directories listed in $MGD77_HOME/mgd77_paths.txt [If $MGD77_HOME is not set it will default to $GMT_SHAREDIR/mgd77].

-A[-]

Display the full path to each cruise [Default]. Optionally, append - which will list just the cruise IDs instead.

-D

Instead of cruise listings, just show the directory paths currently used in the search.

-Iignore

Ignore certain data file formats from consideration. Append a|c|m|t to ignore MGD77 ASCII, MGD77+ netCDF, MGD77T ASCII, or plain tab-separated ASCII table files, respectively. The option may be repeated to ignore more than one format. [Default ignores none].

-V[level] (more ...)

Select verbosity level [c]. Reports the total number of cruises found.

-^ or just -

Print a short message about the syntax of the command, then exits (NOTE: on Windows just use -).

-+ or just +

Print an extensive usage (help) message, including the explanation of any module-specific option (but not the GMT common options), then exits.

-? or no arguments

Print a complete usage (help) message, including the explanation of all options, then exits.