Easy learn linux command line- Part 9

If you want to know about, How to use Special Attributes on Files you must read this Post.

Special Attributes on files Command Description # chattr +a file1 allows write opening of a file only append mode    # chattr +c file1 allows that a file is compressed / decompressed automatically by the kernel    # chattr +d file1 makes sure that the program ignores Dump the files during backup    # chattr +i file1 makes it an immutable file, which can not be removed, altered, renamed or linked    # chattr +s file1 allows a file to be deleted safely    # chattr +S file1 makes sure that if a file is modified changes are written in synchronous mode as with sync    # chattr +u file1 allows you to recover the contents of a file even if it is canceled    # lsattr show specials attributes

source:linuxguide