How can you identify these files and restore them?

When it puts files in a lost+found directory, fsck has lost the directory infor-
mation for the files and thus has lost the names of the files. Each file is given
a new name, which is the same as the inode number for the file:

$ ls –l lost+found
–rw–r––r–– 1 max pubs 110 06-10 10:55 51262

Run file on the files in lost+found. View any readable file (e.g., text, C pro-
gram, ASCII, shell script) using less or a text editor. Running strings on an

executable file might help figure out which program it is. The ls –l command
displays the name of the owner of the file and the group it is associated with;
gather additional information from users regarding which files are missing.