gv --version (return code: 0)
gv 3.7.4
gv --help (return code: 0)
Usage: gv [OPTION]... [FILE]
PostScript and PDF viewer.
[-]-monochrome display document using only black and white
[-]-grayscale display document without colors
[-]-color display document as usual
[-]-safer start ghostscript in safe mode
[-]-nosafer do not start ghostscript in safe mode
[-]-safedir start ghostscript from a safe diretory
[-]-nosafedir do not start ghostscript from a safe diretory
[-]-quiet start ghostscript with the -dQUIET option
[-]-noquiet do not start ghostscript with the -dQUIET option
[-]-infoSilent do not show any messages in the info popup window
[-]-infoErrors do not show warning messages in the info popup window
[-]-infoAll do show all messages in the info popup window
[-]-arguments=ARGS start ghostscript with additional options as specified
by the string ARGS
[-]-page=LABEL display the page with label LABEL first
[-]-center the page should be centered automatically
[-]-nocenter the page should not be centered automatically
[-]-media=MEDIA selects the paper size to be used
[-]-orientation=ORIENTATION sets the orientation of the page
[-]-scale=N|f.f selects the scale N, or arbitrary scale f.f
[-]-scalebase=N selects the scale base N
[-]-swap interchange the meaning of the orientations landscape
and seascape
[-]-noswap do not interchange the meaning of the orientation
landscape and seascape
[-]-antialias use antialiasing
[-]-noantialias do not use antialiasing
[-]-dsc dsc comments are respected
[-]-nodsc dsc comments are not respected
[-]-eof ignore the postscript EOF comment while scanning
documents
[-]-noeof do not ignore the postscript EOF comment while
scanning documents
[-]-pixmap use backing pixmap
[-]-nopixmap do not use backing pixmap
[-]-watch watch the document file for changes
[-]-nowatch do not watch the document file for changes
[-]-help print a help message and exit
[-]-usage print a usage message and exit
[-]-resize fit the size of the window to the size of the page
[-]-noresize do not fit the size of the window to the size of the page
-geometry [<width>][x<height>][{+-}<xoffset>{+-}<yoffset>]
[-]-ad=FILE read and use additional resources from FILE
[-]-style=FILE read and use additional resources from FILE. These resources
have lower priority than those provided on the context of --ad
[-]-password=PASSWORD Sets the password for opening encrypted PDF files
[-]-spartan shortcut for --style=gv_spartan.dat
[-]-widgetless shortcut for --style=gv_widgetless.dat
[-]-fullscreen start in fullscreen mode (needs support from WM)
[-]-presentation Presentation mode (fullscreen, Fit to window,
widgetless and no resizing of window)
[-]-version show gv version and exit