MYI
application/x-mysql-misam-compressed-index
Magic Bytes
Offset: 0
FE FE 06
The MYI file format is the index component of the MyISAM storage engine, originally developed by MySQL AB and now maintained by Oracle Corporation. These files store the index tree for a database table, allowing for rapid data retrieval and optimized search operations within MySQL and MariaDB environments. As a legacy component of the MyISAM engine, MYI files are generally considered safe; however, they lack transactional support and are susceptible to corruption if the database server terminates unexpectedly.
Validation Code
How to validate .myi files in Python
Python
def is_myi(file_path: str) -> bool:
"""Check if file is a valid MYI by magic bytes."""
signature = bytes([0xFE, 0xFE, 0x06])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .myi files in Node.js
Node.js
function isMYI(buffer: Buffer): boolean {
const signature = Buffer.from([0xFE, 0xFE, 0x06]);
return buffer.subarray(0, 3).equals(signature);
}
Go
func IsMYI(data []byte) bool {
signature := []byte{0xFE, 0xFE, 0x06}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
GET
/api/v1/myi
curl https://filesignature.org/api/v1/myi