exif:tldr:2930a
exif: Extract the image thumbnail into the file `thumbnail.jpg`.
$ exif --extract-thumbnail --output=${thumbnail-jpg} ${image-jpg}
try on your machine
The command you provided is likely a command line instruction that uses the exif tool to extract a thumbnail image from a JPEG file.
Here's a breakdown of the command:
exif: Refers to the exif tool, a program that allows users to manipulate metadata (Exchangeable Image File Format, or EXIF) in image files.--extract-thumbnail: Specifies that the command is intended to extract the thumbnail image from the stated file.--output=${thumbnail-jpg}: Specifies the output file name and format for the extracted thumbnail image. Here, "$(thumbnail-jpg)" denotes a variable that should contain the desired name of the output file (e.g., "thumbnail.jpg"). Make sure to replace "$(thumbnail-jpg)" with the actual desired file name, including the .jpg extension.${image-jpg}: Refers to the input image file from which the thumbnail will be extracted. "$(image-jpg)" represents a variable that should contain the name of the input image file (e.g., "image.jpg"). Make sure to replace "$(image-jpg)" with the actual input file name, including the .jpg extension.
In summary, the command will extract the thumbnail image from a specified JPEG file and save it with the specified output file name.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.