mklost+found:tldr:c4e9c

The "mklost+found" command is used in Unix-like systems to create a lost+found directory. This directory is typically found in the root directory of a filesystem and is used to store recovered orphaned files, i.e., files that do not have a proper parent directory entry.

When a filesystem becomes corrupted or experiences data inconsistencies, a utility such as "fsck" (file system consistency check) is often used to fix the issues. During this process, if any files are found that do not have a corresponding entry in the directory structure, they are typically recovered and placed in the lost+found directory.

The "mklost+found" command creates this directory if it does not already exist. It ensures that the lost+found directory is available for storing recovered files when needed.