The length of file names in early Unix

11 ingve 2 5/25/2025, 7:37:27 AM utcc.utoronto.ca ↗

Comments (2)

raydenvm · 9h ago
File names were limited to just 14 characters - UNIX file system called as "Version 6 filesystem". Directory entries, for instance, consisted of: - 2 bytes for the inode number - 14 bytes for the filename

After that, the next file systems went up to 255 characters.

jmclnx · 7h ago
Interesting read and I found out things I did not know.

My first UNIX was Wang IN/ix, which was 14 characters. That was in the very late 80s. Not long afterwards for home use I got Coherent OS, that also had a max of 14.

Later was Slackware, seemed the sky was the limit.

But to be honest, I wish there was still a smaller file name limit, I usually keep my file names size small. But I know I am in a tiny minority when it comes to the size of the file name :)