How to Use ppmtopgm Command (with examples)
Convert a PPM image to a PGM image
The ppmtopgm command is used to convert a PPM (Portable Pixmap) image to a PGM (Portable Graymap) image. This can be useful, for example, if you have a color image in PPM format and you want to convert it to grayscale in PGM format.
To convert a PPM image to a PGM image, use the following command:
ppmtopgm path/to/file.ppm > path/to/file.pgm
The path/to/file.ppm is the path to the PPM image file that you want to convert, and the path/to/file.pgm is the desired path for the converted PGM image file.
Example:
ppmtopgm /path/to/image.ppm > /path/to/converted_image.pgm
This command will read the PPM image from the specified path, convert it to grayscale, and save the result as a PGM image at the specified path.
Display version
If you only want to check the version of ppmtopgm command installed on your system, you can use the -version option. This can be helpful when troubleshooting issues or ensuring you are using the latest version.
To display the version, use the following command:
ppmtopgm -version
Example output:
ppmtopgm version 10.1 (from Netpbm)
This command will output the version number of ppmtopgm.
By knowing the version number, you can determine if any updates or patches are available for your current version. It also ensures compatibility with other tools or software that may require a specific version of ppmtopgm.
