1 MODIFY 2 KEY Modifies the attributes of the specified key. CAUTION Modifying a key results in symbolic links not being followed. This is because the system modifies the key you specified, not the key pointed to by the symbolic link. This command requires the SYSPRV privilege or the REG$UPDATE rights identifier. Format: MODIFY KEY key-name key-name Specifies the name of the key to modify. 3 Qualifiers /CACHE_ACTION /CACHE_ACTION=value Specifies the cache attribute for the key. The value can be WRITEBEHIND (write to disk later) or WRITETHRU (write to disk immediately). /CLASS_NAME /CLASS_NAME=string Specifies the new class name of the key. /LINK /LINK=(TYPE=value, NAME=key-name) Defines the key as a link to another key. The link value must be one of the following: o SYMBOLICLINK o NONE To remove a link, enter the following: /LINK=(TYPE=NONE,NAME="") /NEW_NAME /NEW_NAME=new-key-name Specifies the new name of the key. /SECPOLICY /SECPOLICY=policy Defines the security policy for the key. Currently the only valid policy is NT_40. /WAIT /WAIT=seconds (default = 90) /NOWAIT Specifies the maximum amount of time, in seconds, that you are willing to wait for command completion. If the Registry server does not complete the request in the specified interval, REG$CP returns REG-F-NORESPONSE. The default interval is 90 seconds. /NOWAIT is equivalent to specifying /WAIT=0, but there may still be a short wait period. /WRITEBEHIND /WRITEBEHIND /NOWRITEBEHIND (default) Specifies when the information can be written to disk. /WRITEBEHIND specifies that the information can be written to disk later. /NOWRITEBEHIND specifies write-through operation (that is, the information must be written to disk immediately). 3 Example REG> MODIFY KEY/CACHE_ACTION=WRITEBEHIND HKEY_USERS\GUEST Modifies the cache attribute of the GUEST key. 2 TREE Modifies the information for the specified key and its subkeys. CAUTION Modifying a tree results in symbolic links not being followed. This is because the key and subkeys you specify are modified, not the key pointed to by the symbolic link. This command requires the SYSPRV privilege or the REG$UPDATE rights identifier. Format: MODIFY TREE key-name key-name Specifies the name of key to modify. 3 Qualifiers /CACHE_ACTION /CACHE_ACTION=value Specifies the cache attribute for the key and its subkeys. The value can be WRITEBEHIND (write to disk later) or WRITETHRU (write to disk immediately). /CLASS_NAME /CLASS_NAME=string Specifies the new class name for the given key and all its subkeys. /SECPOLICY /SECPOLICY=policy Defines the security policy for the key. Currently the only valid policy is NT_40. /WAIT /WAIT=seconds (default = 90) /NOWAIT Specifies the maximum amount of time, in seconds, that you are willing to wait for command completion. If the Registry server does not complete the request in the specified interval, REG$CP returns REG-F-NORESPONSE. The default interval is 90 seconds. /NOWAIT is equivalent to specifying /WAIT=0, but there may still be a short wait period. /WRITEBEHIND /WRITEBEHIND /NOWRITEBEHIND (default) Specifies when the information can be written to disk. /WRITEBEHIND specifies that the information can be written to disk later. /NOWRITEBEHIND specifies write-through operation (that is, the information must be written to disk immediately). 3 Example REG> MODIFY TREE/CACHE_ACTION=WRITEBEHIND HKEY_USERS\GUEST Modifies the cache attribute of the GUEST key and all its subkeys. 2 VALUE Specifies the data component for the specified value. This command modifies an existing value. CAUTION Modifying a value results in symbolic links not being followed. This is because the system modifies the value you specified, not the value pointed to by the symbolic link. This command requires the SYSPRV privilege or the REG$UPDATE rights identifier. Format: MODIFY VALUE /NAME=string key-name key-name Specifies the name of the key for which to set the value. 3 Qualifiers /DATA /DATA=value Specifies the data for the value. The value can be: o A string (for example, /DATA=COSMOS) o An array of strings separated by a comma and enclosed in parentheses (for example, /DATA=(COSMOS,Noidea) o A longword in binary, octal, decimal, or hexadecimal format. %B, %O, %D, and %X, or 0B, 0O, 0D, and 0X prefixes specify the format. The default is decimal. Examples: /DATA=%X1A0FCB (hex) /DATA=0X1A0FCB (hex) /DATA=%D1234 (decimal) /DATA=1234 (decimal, by default) NOTE If you specify /DATA, you cannot specify the /INPUT qualifier. /FLAGS /FLAGS=flag Specifies the data flags value. This is an application-dependent 64-bit flag specified as a decimal number or as a hexadecimal number preceded by 0x or %X. /INPUT /INPUT=filename Specifies that the value data is to be read from a file. The input value data can be specified in one of the following formats. With the exception of SZ, the format is specified by a keyword at the start of the file. The keyword can be entered in uppercase or lowercase. Input records following a keyword can span multiple lines; use "\" at the end of any continuation lines. o SZ: a null-terminated Unicode string Enter SZ data by enclosing the record in quotes. You do not specify an SZ keyword for this input value type. You cannot continue the quoted string to a second line. "This is Unicode Data." o DWORD: A 32-bit number. The data following the DWORD keyword is interpreted as a single, 32-bit value. It can be entered as a single value or as a list of values, separated by commas, with the least significant value first, provided the total is 32 or fewer bits. For example, the following valid specifications are equivalent: dword:44332211 DWORD:11,22,33,44 Dword:2211,4433 The following specifications are invalid because the total always exceeds 32 bits: dword:5544332211 dword:11,22,33,44,55 dword:2211,554433 o EXPAND_SZ: A string of Unicode characters. The data following the EXPAND_SZ keyword is interpreted as a list of 4-byte Unicode values. For example: expand_sz:43,44,45 This example stores the Unicode string "CDE". o MULTI_SZ: A concatenated array of SZ strings. The data following the MULTI_SZ keyword is interpreted as a list of 4-byte Unicode values, specifying two or more terminated SZ strings. For example: MULTI_SZ:52,61,69,6e,00,53,6c,65,65,74,00,53,6e,6f,77,00 This example stores the Unicode strings "Rain", "Sleet", and "Snow". o HEX: Binary data. The data following the HEX keyword is interpreted as a list of hex values. For example: HEX:0F,C0,F0,FF o DEC: Binary data. The data following the DEC keyword is interpreted as a list of decimal values. For example: DEC:15,192,240,255 o OCT: Binary data. The data following the OCT keyword is interpreted as a list of octal values. For example: OCT:17,300,360,377 o BIN: Binary data. The data following the BIN keyword is interpreted as a list of binary values. For example: BIN:1111,11000000,11110000,11111111 NOTES o The input format is similar to the IMPORT and EXPORT file format. o The input data type is independent of the data storage type, which is specified by the /TYPE_CODE qualifier. o When you specify a binary input type (HEX, DEC, OCT or BIN) for each value in the record, the data is stored in the fewest bytes possible. No alignment is performed. To insure proper alignment, always enter any list of values as byte values. This input should be a stream of byte values, with the least significant byte first. For example: DEC:253, 254, 255, 256, 257 (bytes/words, unaligned) DEC:253, 0, 254, 0, 255, 0, 256, 257 (bytes/words, word aligned) DEC:253, 0, 254, 0, 255, 0, 0, 1, 0, 2 (byte stream, word aligned) o The input and storage types must be compatible. For example, you cannot specify value type DWORD (which means that the stored data is 4 bytes) and then input the SZ string "A" because then the SZ string would consist of the character 00000041 and the terminator 00000000, which cannot fit in a DWORD. Attempting this will result in a REG-E-INVDATA error. However, specifying an empty string ("") does work and stores just the terminator. Conversely, the input type DWORD specifies an input data length of 4 bytes. You cannot specify value type SZ and input type DWORD:00000041 because SZ strings must be terminated. The only valid DWORD you can enter in this case is 00000000. o When specifying /INPUT, you cannot specify the /DATA qualifier. /LINK /LINK=(TYPE=value, NAME=key-name) Defines the key as a link to another key. The link value must be one of the following: o SYMBOLICLINK o NONE To remove a link, enter the following: /LINK=(TYPE=NONE,NAME="") /NAME /NAME=string Specifies the name of the value. /TYPE_CODE /TYPE_CODE=type Specifies the type of the new value. The type value must be one of the following: o SZ: a null-terminated Unicode string o EXPAND_SZ: a string of Unicode characters o MULTI_SZ: a concatenated array of SZ strings o DWORD: a 32-bit number o BINARY: raw binary data /WAIT /WAIT=seconds (default = 90) /NOWAIT Specifies the maximum amount of time, in seconds, that you are willing to wait for command completion. If the Registry server does not complete the request in the specified interval, REG$CP returns REG-F-NORESPONSE. The default interval is 90 seconds. /NOWAIT is equivalent to specifying /WAIT=0, but there may still be a short wait period. /WRITEBEHIND /WRITEBEHIND /NOWRITEBEHIND (default) Specifies when the information can be written to disk. /WRITEBEHIND specifies that the information can be written to disk later. /NOWRITEBEHIND specifies write-through operation (that is, the information must be written to disk immediately). 3 Example REG> MODIFY VALUE/DATA=COSMOS/TYPE=SZ/NAME=COMPUTERNAME - _REG> HKEY_LOCAL_MACHINE\NODE This example creates the COMPUTERNAME value for the key HKEY_LOCAL_MACHINE\NODE, and sets its type code to SZ and its data value to "COSMOS".