BRIEF User's Guide =========================================================================== Last revised on 2021 SEP 17 by B. V. Semenov. Abstract -------------------------------------------------------- BRIEF is a command-line utility program that displays a contents and time coverage summary for one or more binary SPK or binary PCK files. Summary -------------------------------------------------------- BRIEF is a command line program that displays summary of the contents and time coverage for one or more binary SPK or binary PCK files. The program can display a summary for each individual file listed on the command line, in a list file, and/or a meta-kernel, or for all files as if they were combined into a single file. It can display coverage boundaries as Ephemeris Times (ET) in calendar format, if requested rounded to the nearest second, minute, hour, or day, as ET seconds past J2000, as UTC times in ``year-month-day'' format , or as UTC times in ``day-of-year'' format. BRIEF can restrict summary display to only specified bodies or frames and/or specified centers-of-motion or relative-to-frames and/or for a specified time or time interval. It can display the summary in a variety of formats, ordered by body or frame names or numeric IDs, with or without showing centers-of-motion or relative-to-frames. Usage -------------------------------------------------------- BRIEF is a command line program with the following usage: > brief [-options] file [file ...] where [file]s are binary SPK or PCK files, and possibly text kernels needed to support some of the display types. The options are: -c display centers-of-motion/relative-to-frames -t display summary in a tabular format -a treat all files as a single file -s display summary sorted by start time for each body -g display summary grouped by coverage -n display bodies/frames using only numeric id-codes -o display summary ordered by body/frame name -utc display times in UTC calendar date format -utcdoy display times in UTC day-of-year format -etsec display times as ET seconds past J2000 -sec display times ``rounded inward'' to second -min display times ``rounded inward'' to minute -hour display times ``rounded inward'' to hour -day display times ``rounded inward'' to day - display summary for body [bod] -sb display summary for body [bod] -sc display summary for center/relative-to-frame [cen] -at