pstopdf
From Mac Guides
pstopdf is a Terminal command used to convert PostScript input into a PDF document.
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Examples
The following example creates a file named "MyFile.pdf" from the PostScript data in the file "MyFile.ps".
pstopdf MyFile.ps
The following example creates a PDF file of the manual page of the Terminal command pstopdf on the Desktop of the current user.
man -t pstopdf | pstopdf -i -o ~/Desktop/pstopdf_manual.pdf

