## PremiseWe're given a zip file with 1,210 images. Presumably theres a flag hidden in one of these images.## SolutionI immediately checked the low hanging fruit and ran the command `file *`.All of the resulting files were exactly the same except for one-- 1145.jpg.```114.jpg:  JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31140.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31141.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31142.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31143.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31144.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31145.jpg: JPEG image data, Exif standard: [TIFF image data, big-endian, direntries=4, orientation=upper-left, xresolution=62, yresolution=70, resolutionunit=2], baseline, precision 8, 2444x1718, frames 31146.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31147.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31148.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31149.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 3115.jpg:  JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 31150.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 2444x1718, frames 3```Looking at that file revealed the flag.This was definitely not the intended solution but it's good to know that there are alternative ways of finding unique items in large directories.