Command and option notes

The various commands and their options are listed and described in the following section. Note:

All command and option names are preceded by a minus sign (-).
The options for each command may be provided in any order.
All items not italicized or in braces or brackets are required to appear as is.
Braces surrounding an option generally signify that a default value will be used if the option is not specified on the command line. Braces are also used around the -v, -rfc, and -J options, which only have meaning if they appear on the command line (that is, they don't have any "default" values other than not existing).
Brackets surrounding an option signify that the user is prompted for the values if the option is not specified on the command line. (For a -keypass option, if you do not specify the option on the command line, keytool will first attempt to use the keystore password to recover the private/secret key, and if this fails, will then prompt you for the private/secret key password.)
Items in italics (option values) represent the actual values that must be supplied. For example, here is the format of the -printcert command:
```
keytool -printcert {-file cert_file} {-v}
```
When specifying a -printcert command, replace cert_file with the actual file name, as in:
```
keytool -printcert -file VScert.cer
```
Option values must be quoted if they contain a blank (space).
The -help command is the default. Thus, the command line
```
keytool
```
is equivalent to
```
keytool -help
```