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convert image.jpg ptif:image.tif[256x256]
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image.tif[0] TIFF 2826x4256 2826x4256+0+0 8-bit DirectClass 7.555MB 0.000u 0:00.001
image.tif[1] TIFF 1413x2128 1413x2128+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.012
image.tif[2] TIFF 706x1064 706x1064+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.022
image.tif[3] TIFF 353x532 353x532+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.031
image.tif[4] TIFF 176x266 176x266+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.043
image.tif[5] TIFF 88x133 88x133+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.051
image.tif[6] TIFF 44x66 44x66+0+0 8-bit DirectClass 7.555MB 0.016u 0:00.059
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convert image.tif[3] -crop 256x256 tile-%02d.jpg
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-rw-rw-rw- 1 user group 17587 Mar 31 21:13 tile-03.jpg
-rw-rw-rw- 1 user group 7631 Mar 31 21:13 tile-04.jpg
-rw-rw-rw- 1 user group 27854 Mar 31 21:13 tile-05.jpg
-rw-rw-rw- 1 user group 13476 Mar 31 21:13 tile-06.jpg
-rw-rw-rw- 1 user group 3975 Mar 31 21:13 tile-07.jpg
-rw-rw-rw- 1 user group 1810 Mar 31 21:13 tile-08.jpg
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/PATH_TO_CONVERT/convert -[3] -crop 256x256 jpg:-