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## org.hyperic.sigar.shell
Interface ShellCommandHandler

All Known Implementing Classes:
  CpuInfo, Df, Du, FileVersionInfo, Free, Ifconfig, Iostat, Kill, Ls, MultiPs, MultiwordShellCommand, NetInfo, Netstat, Nfsstat, Pidof, ProcFileInfo, ProcInfo, ProcModuleInfo, Ps, Route, ShellCommand_alias, ShellCommand_get, ShellCommand_help, ShellCommand_quit, ShellCommand_set, ShellCommand_sleep, ShellCommand_source, ShellCommandBase, ShowArgs, ShowEnv, SigarCommandBase, SysInfo, Time, Ulimit, Uptime, Version, Who, Win32Service

    public interface ShellCommandHandler

Method Summary
`java.lang.String` | `getSyntax()` Get a description of the syntax for how a command should be invoked.
`java.lang.String` | `getUsageHelp(java.lang.String[] args)` Get some info on how to invoke this command.
`java.lang.String` | `getUsageShort()` Get a very brief (40 character) description of the command
`void` | `init(java.lang.String commandName, ShellBase shell)` Initialize this command handler.
`void` | `processCommand(java.lang.String[] args)` Handle a command.

Method Detail

### init

    void init(java.lang.String commandName,
              ShellBase shell)
              throws ShellCommandInitException

  Initialize this command handler.

  Parameters:
    `commandName` - The name of the command.
    `shell` - The shell. This is useful for command that need to be able to interpret other commands, like the "help" command, and for commands that need to get additional user input, for example a login command that presents a password prompt.
  Throws:
    `ShellCommandInitException`

### processCommand

    void processCommand(java.lang.String[] args)
                        throws ShellCommandUsageException,
                               ShellCommandExecException

  Handle a command.

  Parameters:
    `args` - The args to the command.
  Throws:
    `ShellCommandUsageException` - If the args are malformed.
    `ShellCommandExecException` - If an error occurred executing the command.

### getUsageHelp

    java.lang.String getUsageHelp(java.lang.String[] args)

  Get some info on how to invoke this command.

  Returns:
    Some usage information on how this command is expected to be invoked.

### getUsageShort

    java.lang.String getUsageShort()

  Get a very brief (40 character) description of the command

  Returns:
    A description of the command.

### getSyntax

    java.lang.String getSyntax()

  Get a description of the syntax for how a command should be invoked.

  Returns:
    A description of the syntax

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