montage:tldr:030f6

This command is using the "montage" command-line tool to combine multiple images into a single image grid. Here's an explanation of each part of the command:

• ${image1-png}: This is a placeholder for the first image file name in PNG format.
• ${image2-jpg}: This is a placeholder for the second image file name in JPG format.
• ${imageN-png}: This is a placeholder for the Nth image file name in PNG format. You can replace N with the actual number of images you want to combine.
• -geometry +0+0: This option sets the positioning of the individual images within the grid. In this case, +0+0 means that there will be no spacing between the images and the top-left corner of the final image will align with the top-left corner of the first image.
• -tile 2x3: This option sets the number of columns and rows in the image grid. In this case, 2x3 means that the final image will have 2 columns and 3 rows, resulting in a grid of 6 images.
• montage_%d.jpg: This specifies the output file name pattern. %d is a placeholder for a sequence number which will be automatically generated for each output file. The files will be saved in the JPEG format with a prefix "montage_" followed by the sequence number.

To use this command, replace the ${imageX-format} placeholders with the actual file names of the images you want to combine and execute the command in the terminal. The resulting image grid will be saved as multiple JPEG files.