8.4. Implementation

8.4.1. System startup

Boot from the diskset in the usual way.

8.4.2. Test the "more" script

Display kernel messages by piping the output of "dmesg" to "more".

bash# dmesg | more

Examine the local_fs script by using "more" with a command-line argument.

bash# more /etc/init.d/local_fs

8.4.3. Use ps to show running processes

Display processes for the user currently logged in.

bash# ps

Display all available information about all running processes.

bash# ps -ef

8.4.4. Run a simple sed script

Use "sed" to display an alternate version of /etc/passwd.

bash# sed -e "s/Legacy/Old School/" /etc/passwd

Verify that sed did not make the changes permanent.

bash# cat /etc/passwd

8.4.5. Test the "ed" editor

Use "ed" to change properties on the "bin" user.

bash# ed -p* ed* r /etc/passwd ed* %p ed* /bin/s/Legacy/Old School/ ed* %p ed* w ed* q

Verify that the changes are permanent (at least until the system is restarted.)

bash# cat /etc/passwd

8.4.6. System shutdown

Bring the system down gracefully with the "shutdown" command.