Here are the command-lines for said emulator:
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PCSXR
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Usage: pcsxr [options]
options:
-nogui Don't open the GUI
-psxout Enable PSX output
-slowboot Enable BIOS logo
-runcd Runs CD-ROM (requires -nogui)
-cdfile FILE Runs a CD image file (requires -nogui)
-help Display this message
So as suggested by Draco1962 it should work.