C:\WINDOWS>SCHTASKS /DELETE /?

SCHTASKS /Delete [/S system [/U username [/P password]]] /TN taskname
 [/F]

Description:
   Deletes one or more scheduled tasks.

Parameter List:
   /S         system       Specifies the remote system to connect to.

   /U         username     Specifies the user context under
                           which the command should execute.

   /P         password     Specifies the password for the given
                           user context.

   /TN        taskname     Specifies the name of the scheduled task to
                           delete. Wildcard "*" may be used to delete
                           all tasks.

   /F                      (Force) Deletes the task and suppresses
                           warnings if the specified task is currently
                           running.

   /?                      Displays this help/usage.

Examples:
   SCHTASKS /Delete /TN * /F
   SCHTASKS /Delete /TN "Backup and Restore"
   SCHTASKS /Delete /S system /U user /P password /TN "Start Restore"
   SCHTASKS /Delete /S system /U user /P password /TN "Start Backup" /F



C:\WINDOWS>SCHTASKS /QUERY  /?

SCHTASKS /Query [/S system [/U username [/P password]]] [/FO format]
   [/NH] [/V] [/?]

Description:
   Enables an administrator to display the scheduled tasks on the
   local or remote system.

Parameter List:
   /S           system      Specifies the remote system to connect to.

   /U           username    Specifies the user context under
                            which the command should execute.

   /P           password    Specifies the password for the given
                            user context.

   /FO          format      Specifies the output format to be
                            displayed. Valid values: TABLE, LIST, CSV.

   /NH                      Specifies that the column header should not
                            be displayed in the output.
                            Valid only for TABLE and CSV formats.

   /V                       Specifies additional output to be
                            displayed.

   /?                       Displays this help/usage.

Examples:
   SCHTASKS /Query
   SCHTASKS /Query /?
   SCHTASKS /Query /S system /U user /P password
   SCHTASKS /Query /FO LIST /V /S system /U user /P password
   SCHTASKS /Query /FO TABLE /NH /V



C:\WINDOWS>SCHTASKS /CHANGE /?

SCHTASKS /Change [/S system [/U username [/P password]]] /TN taskname

Description:
   Changes the program to run, or user account and password used
   by a scheduled task.

Parameter List:
   /S       system           Specifies the remote system to connect to.

   /U       username         Specifies the user context under
                             which the command should execute.

   /P       password         Specifies the password for the given
                             user context.

   /RU      username         Changes the user name (user context) under
                             which the scheduled task has to run.
                             For the system account, valid values are
                             "", "NT AUTHORITY\SYSTEM" or "SYSTEM".

   /RP      password         Specifies a new password for the existing
                             user context or the password for a new
                             user account. Password will not effect for
                             the system account.

   /TR      taskrun          Specifies a new program that the scheduled
                             task runs. Type the path and file name of
                             the program.

   /TN      taskname         Specifies which scheduled task to change.

   /?                        Displays this help/usage.

Examples:
   SCHTASKS /Change /RP password /TN "Backup and Restore"
   SCHTASKS /Change /TR restore.exe /TN "Start Restore"
   SCHTASKS /Change /S system /U user /P password /RU newuser
            /TN "Start Backup"