T (.t)
.t file signature | text/troff
T is a troff source file format developed at Bell Labs and maintained through Unix and Unix-like text-processing ecosystems. It is used to prepare formatted manuals, technical documentation, and printable documents with the troff family of typesetting tools. The format is generally safe, but it is a legacy plain-text markup language whose content may include macros and commands that affect document rendering.
Magic Bytes
Offset 0
2E 5C 22
Sources: Apache Tika
All Known Signatures
5 signature variants are documented for .t files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 2E 5C 22 | 0 | Apache Tika |
| 27 5C 22 | 0 | Apache Tika |
| 27 2E 5C 22 | 0 | Apache Tika |
| 5C 22 | 0 | Apache Tika |
| 27 27 27 | 0 | Apache Tika |
Extension
.t
MIME Type
text/troff
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .t files in Python
def is_t(file_path: str) -> bool:
"""Check if file is a valid T by magic bytes."""
signature = bytes([0x2E, 0x5C, 0x22])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .t files in Node.js
function isT(buffer: Buffer): boolean {
const signature = Buffer.from([0x2E, 0x5C, 0x22]);
return buffer.subarray(0, 3).equals(signature);
}How to validate .t files in Go
func IsT(data []byte) bool {
signature := []byte{0x2E, 0x5C, 0x22}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
/api/v1/t
curl https://filesignature.org/api/v1/t
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .t file?
A .t file is identified by the magic bytes 2E 5C 22 at byte offset 0. T is a troff source file format developed at Bell Labs and maintained through Unix and Unix-like text-processing ecosystems. It is used to prepare formatted manuals, technical documentation, and printable documents with the troff family of typesetting tools. The format is generally safe, but it is a legacy plain-text markup language whose content may include macros and commands that affect document rendering.
What are the magic bytes for .t files?
The magic bytes for T files are 2E 5C 22 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .t file?
To validate a .t file, read the first bytes of the file and compare them against the known magic bytes (2E 5C 22) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .t files?
The primary MIME type for .t files is text/troff.
Is it safe to open .t files?
T (.t) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.