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| <H2><A NAME="s20">20. Screen dumps</A></H2> |
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| console!screenshots, obtaining |
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| screenshots!obtaining from console |
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| <P><CODE>setterm -dump</CODE> <I>N</I> will dump the contents of the |
| screen of <CODE>/dev/tty</CODE><I>N</I> to a file <CODE>screen.dump</CODE> |
| in the current directory. See setterm(1). |
| <P>The current contents of the screen of <CODE>/dev/tty</CODE><I>N</I> |
| can be accessed using the device <CODE>/dev/vcs</CODE><I>N</I> |
| (where `vcs' stands for `virtual console screen'). |
| For example, you could have a clock program that displays the |
| current time in the upper right hand corner of the console screen |
| (see the program <CODE>vcstime</CODE> in <CODE>kbd-1.04.tar.gz</CODE>). |
| Just dumping the contents goes with <CODE>cat /dev/vcs</CODE><I>N</I>. |
| These device files <CODE>/dev/vcs</CODE><I>N</I> do not contain |
| newlines, and do not contain attributes, like colors. From a program |
| it is usually better to use <CODE>/dev/vcsa</CODE><I>N</I> |
| (`virtual console screen with attributes') instead - it starts with |
| a header giving the number of rows and columns and the location |
| of the cursor. |
| See vcs(4). |
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