Bill, good point but I looked and don't think that is what happened. This box is not in production and has a private ip. I took care of the ps issue by reinstalling procps-3.2.7-11.1.el5.i386. The RPM issue was fix by reinstalling the rpm package. -----Original Message----- From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Bill Campbell Sent: Thursday, April 30, 2009 12:54 PM To: centos@xxxxxxxxxx Subject: Re: ps error On Thu, Apr 30, 2009, P.A wrote: > > Hi does anyone know what the problem here is > > [root@dnstest lib]# ps > > ps: error while loading shared libraries: libproc-3.2.3.so: cannot > open shared object file: No such file or directory When programs like ps, sed, find, etc. start showing shared library problems, it is usually an indication that the box has been partially cracked. I say partially since the cracker will install/replace versions of /bin/ps et al with ones that are built for another version of Linux. As other have noted, ``rpm -V'' is usually useful to detect changed files. Frequently crackers put their programs under /tmp, /var/tmp, or the /dev directories with directory names such as ``.. '' that are not easily seen. They try to install versions of find, ps, netstat, etc. that are designed to hide their processes. If you have a good system to monitor changes on *ALL* critical files and directories, and can identify changed, added, or deleted files, it is possible to restore a cracked system without a complete reinstall. Otherwise the only safe method is to take the system off line, do a fresh install, and try to figure out how the system was cracked. Bill -- INTERNET: bill@xxxxxxxxxxxxx Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax: (206) 232-9186 Skype: jwccsllc (206) 855-5792 If you have to choose between trusting the natural stability of gold and the honesty and intelligence of members of the government, with due respect for these gentlemen, I advise you, as long as the capitalist system lasts, to vote for gold. -- George Bernard Shaw _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos