Essential Unix Administration

What is the major device number for /dev/dsp? Hint: use ls to examine devices in /dev/, and the size field contains the major and minor device numbers.

Enter a number:

What is the name of the kernel device which looks after /dev/dsp? Hint: Find the device number as in q1, then use /proc/devices to match the device number to the kernel module.

Enter a string:

What is the process id of syslogd? Hint: remember the 'ps aux' command?

Enter a number:

The syslogd is actually two services, syslogd and klogd. Kill syslogd using the kill command, leaving klogd running.

Restart the syslogd services. To do this you first need to stop syslogd in init.d, and then start it again. If you do not stop it first it will not start up properly. Hint: scripts in /etc/init.d allow the starting and stopping of services. To find out the status of syslog enter '/etc/init.d/syslog status'. To find out the command syntax for the syslog script run it again without the status option.

Start the mysql service. Hint: Look in /etc/init.d to find the script that controls the mysql service.

What user does the mysql service run as? Hint: 'ps aux' gives info about which user a process runs as.

Enter the user:

Somewhere in the /proc filesystem there is a file which tells you how much swap space has been allocated to the computer. Find that file and then find out how big in bytes the swap space is. Hint: the information that you require is located within the /proc directory.

Enter a number:

What run levels does sshd run at (specified as a list like 139 for runlevels 1, 3, and 9). Hint: Try the chkconfig command.

Enter a number:

What is the IRQ number assigned to the hardware controlling eth0? (Hint - look at the manual pages for proc).

Enter a number: