I used gbak for the first time today.

After some head-scratching, this command worked:

gbak -b - user SYSDBA - pas masterkey MYDB.GDB MYDB.BK

1. where can I find written explanation of all gbak options ?

2. does the command above reclaim the space taken by deleted records ?

3. is the command above all what is periodically needed for the correct
working of FB ?

4. I discovered that gbak -help lists all the avaiable options, along with
a short explanation for each one.

Alas! The options are so many that they scroll vertically and only the last
ones can be read.

gbak -help | more

does not work, too.

Is there a way to read the whole help screen, or was the author of gbak
naive enough not to allow this ?

Thank you

Duilio Foschi