Sun also has a version of snapshot that can capture images. The images can be loaded and viewed with imagetool and then saved to a variety of formats, including postscript. Both snapshot and imagetool have nice user interfaces to help you through the process. See the man pages for more information. Using xv to create PostScript files from screen images xv is a very usfule tool for capturing and manipulating images - especially GIF files.
Type xv to start the program.
To view the xv menu, place the mouse pointer over the inital window and press the right mouse button. Click on the grab button with the left mouse button, then use the middle button to drag over the screen region you wish to save to a PostScript file. A copy of these pixels will appear in a separate window. Next use the browser to save the PostScript to a file. It is recommended that you give the file a .ps extension, to indicate its format.