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-R Recursively change attributes of directories and their contents.
+i to set the immutable bit to prevent even root from erasing or changing the contents of a file.
There are 2 alternatives - vote for the best!
Forces the -i flag on the rm command when using a wildcard delete.
If you can do better, submit your command here.
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chattr is a utility for e2fs; this command may not work with xfs, jfs, or reiserfs.
Using 'chattr +i' has some odd side-effects. File permissions will still show "writable", but any attempt to write to the file will return 'permission denied,' even as root. Users and other sysadmins will get confused. Setting a directory as immutable will also prevent adding new files. I think you meant to say
chattr -R +u dirname # undeletableKeep in mind...from the chattr man page:
"The ?c?, ?s?, and ?u? attributes are not honored by the ext2 and ext3 filesystems as implemented in the current mainline Linux kernels."
See here for a patch
http://lwn.net/Articles/211193/