Check-ps is a program that is designed to detect rootkit versions of ps that fail to tell you about selected processes. It currently requires /proc but other scanning methods can be implemented. The program will run in the background or one-shot mode. Check-ps has grown rather to better resist increasingly sophisticated attacks, generate more useful reports, and implement more detection methods. You are encouraged to check the signatures, available here.
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Check ps is a simple program that runs ps and compares it with its own list. It currently requires /proc but other scanning methods can be implemented. The program will run in the background or one-shot mode. Check-ps has grown rather to better resist increasingly sophisticated attacks, generate more useful reports, and implement more detection methods.
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check-ps is a program that runs in the background, periodically executing the 'ps' program and checking its contents against the list of processes in a SysV-style /proc file system. Any processes that appear in /proc and do not appear in the information returned by 'ps' are logged and can even be killed. Any processes that appear in the output of 'ps' and not /proc are also reported (this might be done to give you the impression that syslogd is running when it is not, for example). Restriction: non-extant processes with non-fixed pids reported are not detected but easy for humans to detect.
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