From the *nix shell command line

you type	you get
ccdb	you get a simple usage message
ccdb help	you get a more extensive help message
ccdb -i	you enter the ccdb shell. there are several unix-like commands available to you to navigate the contents of the database and to modify the contents of the database

Example ccdb shell session

Enter the ccdb shell with "ccdb -i". After that:

you type	you get
ls	shows contents of the current directory
ls BCAL	shows the contents of the BCAL directory
cd BCAL	enter the BCAL directory
ls	shows the contents of the current directory (BCAL now)
info cluster_merging	displays detailed information about the nature of the "cluster_merging" calibration constant type
vers cluster_merging	shows versions of the cluster_merging calibration type
cat 5	dumps ("cat"s) the contents of calibration version 5