What is going on here....

[Jay Ridgley]

Good? Morning,

On one of my systems I have started getting the following message in 
response to various commands:

cdjsys at mateo:~$ ifconfig
-bash: /sbin/ifconfig: Input/output error
cdjsys at mateo:~$ vi
-bash: /usr/bin/vi: Input/output error
cdjsys at mateo:~$

.bashrc has not changed, other commands still work (ls, tail, etc.).

This is a headless server system and is maintained via ssh. All the 
current updates have been applied:

Ubuntu 16.04.3 LTS (GNU/Linux 3.2.0-64-generic-pae i686)

Any ideas???

Cheers,
Jay

-- 
Jay Ridgley
jridgley2 at austin.rr.com
Registered Linux User ID - 9115
https://linuxcounter.net/cert/9115.png
Registered Ubuntu User ID - 23320