Error while running prngd: Failed to execl - sshd

In my linux embedded device, I run prngd in the following way:
prngd /var/run/egd-pool
In the system log I am getting the followiong errors:
192.168.8.195.34453:<29>Jan 1 00:04:49 prngd[132]: prngd 0.9.29 (12 Jul 2004) started up for user root
192.168.8.195.34453:<29>Jan 1 00:04:49 prngd[132]: have 7 out of 1024 filedescriptors open
192.168.8.195.34453:<25>Jan 1 00:04:50 prngd[147]: Failed to execl(/usr/bin/w, w, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:50 prngd[149]: Failed to execl(/usr/bin/last, last, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:50 prngd[150]: Failed to execl(/usr/bin/lastlog, lastlog, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:50 prngd[153]: Failed to execl(/usr/bin/vmstat, vmstat, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:50 prngd[155]: Failed to execl(/usr/bin/ipcs, ipcs, -a, , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:51 prngd[173]: Failed to execl(/usr/bin/w, w, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:51 prngd[175]: Failed to execl(/usr/bin/last, last, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:51 prngd[176]: Failed to execl(/usr/bin/lastlog, lastlog, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:51 prngd[179]: Failed to execl(/usr/bin/vmstat, vmstat, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:04:51 prngd[181]: Failed to execl(/usr/bin/ipcs, ipcs, -a, , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:19:42 prngd[220]: Failed to execl(/usr/bin/w, w, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:21:25 prngd[222]: Failed to execl(/usr/bin/last, last, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:22:16 prngd[224]: Failed to execl(/usr/bin/lastlog, lastlog, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:24:49 prngd[227]: Failed to execl(/usr/bin/vmstat, vmstat, , , , ): No such file or directory
192.168.8.195.34453:<25>Jan 1 00:26:31 prngd[229]: Failed to execl(/usr/bin/ipcs, ipcs, -a, , , ): No such file or directory
Is there a way to understand why prngd gives me such errors?
Thanks.


After investigating, those errors are generated because in the prngd configuration file (/etc/prngd.conf) those file are used to generate entropy. It is clearthat if those files are not present on the device, prngd generate an issue.
To solve this, is sufficient to comment the lines related to the missing files.

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16/06/12 01.13.51 com.rsync.backup[14139] rsync: recv_generator: mkdir "/Volumes/RIASSUNTI/UNIVERSITA" failed: Permission denied (13)
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