1. COP 4343 Unix System Administration
Unit 5:
system status
process control
security

2. System Status user information: system context disk usage:
id, logname, whoami, groups, users, who
system context
date, uname, hostname
disk usage:
du, df, stat

3. Process Control list all processes: change process priority:
ps, top
change process priority:
nice, renice
increments process priority number,
i.e. reduces priority
terminate process
kill
argument specifies type of kill signal
i.e.: TERM, HUP, KILL

4. /proc directory file-system-like view of system status
cpuinfo
devices
interrupts
pci
uptime
per process sub-directories
cmdline
cwd

5. Security status check current status configuration
sestatus –v
configuration
/etc/selinux/config
ex: “enforcing”, “targeted”
enforcement can be strict or permissive
ex: setenforce