POSIX Extended attributes

Created on Dec 4, ’22 ・ Updated on Mar 5, ’23

Available attributes depend on the filesystem used.

lsattr, chattr

• append only (a)
• no atime updates (A)
• compressed (c)
• no copy on write (C)
• no dump (d)
• synchronous directory updates (D)
• extent format (e)
• immutable (i)
• data journalling (j)
• secure deletion (s)
• synchronous updates (S)
• no tail-merging (t)
• top of directory hierarchy (T)
• undeletable (u)