Accidently deleted /usr contents. Post: 302763371

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Top Forums Shell Programming and Scripting Accidently deleted /usr contents. Post 302763371 by chacko193 on Wednesday 30th of January 2013 01:41:52 AM

01-30-2013

Registered User

Quote:

Originally Posted by Corona688

Yikes. Difficult to say without knowing what find found, but a path name with spaces in it may cause unintended splitting whenever unquoted. /path/with /usr/ would split into '/path/with' and '/usr/' for instance.

Why this script was running as root is another good soul-searching question. Preventing program bugs from getting too out of control is one reason file permissions exist, but root bypasses all that.

Well find was intented to return a number;initially 2 and then 3 on the next run,but never more than 3.

And another intresting fact is that the $oldeest_file sholud only have the filename and not any path.
The script was supposed to be automatically executed by the audomon daemon when the audit trail was swiched to another file.So I have no idead fom where the script was run,but I think the script would hav run with a UID of 0 and thus all the problem.

---------- Post updated at 01:41 AM ---------- Previous update was at 01:37 AM ----------

Quote:

Originally Posted by Scrutinizer

$oldest_file could also have contained a directory entry. Maybe the script was executed while in the root directory and /usr happened to be the oldest entry..

If that was the case, then all files in /usr should have been deleted.But some files were not deleted,only a few.

chacko193

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LEARN ABOUT PLAN9

times

times(1)							   User Commands							  times(1)

NAME

       times - shell built-in function to report time usages of the current shell

SYNOPSIS

   sh
       times

   ksh
       times

DESCRIPTION

   sh
       Print the accumulated user and system times for processes run from the shell.

   ksh
       Print the accumulated user and system times for the shell and for processes run from the shell.

       On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:

       1.  Variable assignment lists preceding the command remain in effect when the command completes.

       2.  I/O redirections are processed after variable assignments.

       3.  Errors cause a script that contains them to abort.

       4.  Words,  following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
	   able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation  are  not
	   performed.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ksh(1), sh(1), time(1), attributes(5)

SunOS 5.10							    15 Apr 1994 							  times(1)