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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.


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Universal configuration monitoring and system of record for IT.
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May 19, 2015 - A Look At The New Commandlinefu
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Protect directory from an overzealous rm -rf *

Terminal - Protect directory from an overzealous rm -rf *
sudo chattr -R +i dirname
2011-05-17 05:05:49
User: mamue
Functions: chattr sudo
6
Protect directory from an overzealous rm -rf *

-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.

Alternatives

There are 5 alternatives - vote for the best!

Terminal - Alternatives
cd <directory>; touch ./-i
2011-05-12 11:01:58
User: ljmhk
Functions: cd touch
Tags: touch
15

Forces the -i flag on the rm command when using a wildcard delete.

Know a better way?

If you can do better, submit your command here.

What others think

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 # undeletable
Comment by Mozai 275 weeks and 1 day ago

Keep 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/

Comment by DaveQB 274 weeks ago

Your point of view

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