Pick a Free OS

From Power (point) to Magic(point) -- Presentations using your Linux box

If you notice carefully, lines 57-58 are of the normal type. However, after displaying lines 57-58 the presentation will pause due to the use of the pause keyword in line number 59. To continue the presentation you can use the SPACEBAR key. This feature is important if you don't want all the points barging onto the screen in one go and you would want to decide when the next point should appear on screen.

The next slide is quite interesting. Using this particular feature, you could embed output of live system commands into your presentation.

%PAGE <--63

Grab command output into foils <--64

ls -l /boot <--65

%size 3, prefix " " <--66

%filter ls -l /boot " <--67

%endfilter <--68

echo this is test | rev <--69

%filter rev <--70

this is test <--71

%endfilter <--72

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%filter ls -l /boot " <--67

%endfilter <--68

Take a closer look at the lines 67-68, these lines incorporate a feature called FILTERS into the slide. Using this particular feature, you can pipe the output of a live system command into your presentation. The above line number 67 pipes the output of the ls -la /boot command into your slide. This command is equivalent to displaying the following data on screen.

trevor@freeos.com:~ > ls -al /boot

total 1062

drwxr-xr-x 3 root root 1024 Sep 7 06:51 .

drwxr-xr-x 21 root root 387 Jan 7 23:55 ..

-rw-r--r-- 1 root root 254408 Mar 25 2000 System.map-2.2.14

-rw-r--r-- 1 root root 512 Sep 7 06:51 boot.0300

-rw-r--r-- 1 root root 4568 Mar 25 2000 boot.b

-rw-r--r-- 1 root root 612 Mar 25 2000 chain.b

drwxr-xr-x 2 root root 12288 Sep 7 06:25 lost+found

-rw------- 1 root root 11776 Sep 7 06:51 map

-rw-r--r-- 1 root root 620 Mar 25 2000 os2_d.b

-rw-r--r-- 1 root root 792796 Mar 25 2000 vmlinuz