Red Hat Linux 8 Training Week 4
Review Week 3
Remember /etc/rc.d/init.d and the runlevels?
Why didn't anyone ask me why this page wasn't here until Monday, again?
Users and Permissions
User and Group IDs (/etc/passwd, /etc/group)
Everything is a number; the names are for convenience
chown, chmod and loads of rwx.
Octal Representation (777-000)
Oddities (sticky bit, setuid, sgid)
Investigating Running Processes
Down and Dirty w/ ps and top
fuser and how it can tell you loads of things in a hurry
Stop what you don't need (ntsysv, chkconfig)
tcp wrappers (basic overview, more later)
Reviewing logs files
Getting Comfortable at the Command Line
cd, mkdir, ls
cat, less, more
ps, w, who, whoami
cp, rm, ln
egrep, awk, sed
foreground, background, job control
Systems Utilization (partially covered)
mount, df, du, top, free
RedHat Package Manager
What is IN a RPM?
What does RPM do for you?
RPM Command Line
Querying (rpm -qa, rpm -qplvi, rpm --whatrequires)
Installing/Upgrading (rpm --install, rpm -U)
Freshening (rpm -F)
Erasing (rpm -e)