Вопросы Теги

Отображение метаданных изображения с меньшим количеством каналов?

Вы можете запустить гипервизор типа -1, например гипервизор Xen и пусть ваша обычная ОС будет размещена в качестве виртуализированного гостя. Гипервизор управляет виртуальной гостевой ОС на более «глубоком» уровне, чем root, поскольку он контролирует (виртуальное )оборудование, на котором работает гостевая ОС.

Вы можете запрограммировать гипервизор для управления гостевой ОС различными способами, включая изменение разрешений, создание и применение резервных копий, перехват определенных изменений или инструкций в гостевой ОС для внедрения дополнительных функций, проверки и т. д. Это было бы правильным,потенциально полезный способ реализации системы типа unix с «пользователем» (, на самом деле функцией гипервизора )для «делания вещей, которые не может сделать даже root»

Я чувствую, что этот подход, вероятно, является излишним

2
22.12.2019, 00:34
1 ответ

Как указано в README репозитория исходного кода lesspipe, для файлов jpg, png и gif требуется identifyутилита (от ImageMagick ). 

jpg, png, gif requires identify

Проверяя утилиту identify, я заметил, что автор видео из-за ее использования вызывал с флагом -verbose, тогда как вывод, полученный вами (и мной в моем Debian buster system )была без флага:

$ identify jpeg-file.jpg
jpeg-file.jpg JPEG 415x415 415x415+0+0 8-bit sRGB 26138B 0.010u 0:00.000

$ identify -verbose jpeg-file.jpg
Image: jpeg-file.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Mime type: image/jpeg
  Class: DirectClass
  Geometry: 415x415+0+0
  Resolution: 96x96
  Print size: 4.32292x4.32292
  Units: PixelsPerInch
  Colorspace: sRGB
  Type: Grayscale
  Base type: Undefined
  Endianess: Undefined
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
  Channel statistics:
    Pixels: 172225
    Red:
      min: 0  (0)
      max: 255 (1)
      mean: 153.031 (0.600122)
      standard deviation: 122.135 (0.478962)
      kurtosis: -1.80175
      skewness: -0.416927
      entropy: 0.323346
    Green:
      min: 0  (0)
      max: 255 (1)
      mean: 153.031 (0.600122)
      standard deviation: 122.135 (0.478962)
      kurtosis: -1.80175
      skewness: -0.416927
      entropy: 0.323346
    Blue:
      min: 0  (0)
      max: 255 (1)
      mean: 153.031 (0.600122)
      standard deviation: 122.135 (0.478962)
      kurtosis: -1.80175
      skewness: -0.416927
      entropy: 0.323346
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 153.031 (0.600122)
      standard deviation: 122.135 (0.478962)
      kurtosis: -1.80174
      skewness: -0.41693
      entropy: 0.323346
  Colors: 256
  Histogram:
     54858: (  0,  0,  0) #000000 black
      4225: (  1,  1,  1) #010101 srgb(1,1,1)
      2049: (  2,  2,  2) #020202 srgb(2,2,2)
      1111: (  3,  3,  3) #030303 grey1
       432: (  4,  4,  4) #040404 srgb(4,4,4)
       338: (  5,  5,  5) #050505 grey2
       285: (  6,  6,  6) #060606 srgb(6,6,6)
       349: (  7,  7,  7) #070707 srgb(7,7,7)
       272: (  8,  8,  8) #080808 grey3
       132: (  9,  9,  9) #090909 srgb(9,9,9)
       113: ( 10, 10, 10) #0A0A0A grey4
        86: ( 11, 11, 11) #0B0B0B srgb(11,11,11)
        66: ( 12, 12, 12) #0C0C0C srgb(12,12,12)
       168: ( 13, 13, 13) #0D0D0D grey5
        31: ( 14, 14, 14) #0E0E0E srgb(14,14,14)
        45: ( 15, 15, 15) #0F0F0F grey6
        49: ( 16, 16, 16) #101010 srgb(16,16,16)
        89: ( 17, 17, 17) #111111 srgb(17,17,17)
        28: ( 18, 18, 18) #121212 grey7
        27: ( 19, 19, 19) #131313 srgb(19,19,19)
       290: ( 20, 20, 20) #141414 grey8
        21: ( 21, 21, 21) #151515 srgb(21,21,21)
        24: ( 22, 22, 22) #161616 srgb(22,22,22)
        20: ( 23, 23, 23) #171717 grey9
        20: ( 24, 24, 24) #181818 srgb(24,24,24)
       109: ( 25, 25, 25) #191919 srgb(25,25,25)
        20: ( 26, 26, 26) #1A1A1A grey10
        22: ( 27, 27, 27) #1B1B1B srgb(27,27,27)
        36: ( 28, 28, 28) #1C1C1C grey11
        28: ( 29, 29, 29) #1D1D1D srgb(29,29,29)
        90: ( 30, 30, 30) #1E1E1E srgb(30,30,30)
        29: ( 31, 31, 31) #1F1F1F grey12
        27: ( 32, 32, 32) #202020 srgb(32,32,32)
        20: ( 33, 33, 33) #212121 grey13
        15: ( 34, 34, 34) #222222 srgb(34,34,34)
        17: ( 35, 35, 35) #232323 srgb(35,35,35)
        12: ( 36, 36, 36) #242424 grey14
       227: ( 37, 37, 37) #252525 srgb(37,37,37)
        84: ( 38, 38, 38) #262626 grey15
        18: ( 39, 39, 39) #272727 srgb(39,39,39)
        19: ( 40, 40, 40) #282828 srgb(40,40,40)
        14: ( 41, 41, 41) #292929 grey16
       154: ( 42, 42, 42) #2A2A2A srgb(42,42,42)
        40: ( 43, 43, 43) #2B2B2B grey17
        14: ( 44, 44, 44) #2C2C2C srgb(44,44,44)
        29: ( 45, 45, 45) #2D2D2D srgb(45,45,45)
        10: ( 46, 46, 46) #2E2E2E grey18
         9: ( 47, 47, 47) #2F2F2F srgb(47,47,47)
        14: ( 48, 48, 48) #303030 grey19
       350: ( 49, 49, 49) #313131 srgb(49,49,49)
       217: ( 50, 50, 50) #323232 srgb(50,50,50)
        12: ( 51, 51, 51) #333333 grey20
        11: ( 52, 52, 52) #343434 srgb(52,52,52)
       346: ( 53, 53, 53) #353535 srgb(53,53,53)
        16: ( 54, 54, 54) #363636 grey21
         9: ( 55, 55, 55) #373737 srgb(55,55,55)
        11: ( 56, 56, 56) #383838 grey22
        12: ( 57, 57, 57) #393939 srgb(57,57,57)
         7: ( 58, 58, 58) #3A3A3A srgb(58,58,58)
        10: ( 59, 59, 59) #3B3B3B grey23
         9: ( 60, 60, 60) #3C3C3C srgb(60,60,60)
         5: ( 61, 61, 61) #3D3D3D grey24
        11: ( 62, 62, 62) #3E3E3E srgb(62,62,62)
        12: ( 63, 63, 63) #3F3F3F srgb(63,63,63)
        11: ( 64, 64, 64) #404040 grey25
        16: ( 65, 65, 65) #414141 srgb(65,65,65)
         8: ( 66, 66, 66) #424242 grey26
        19: ( 67, 67, 67) #434343 srgb(67,67,67)
        13: ( 68, 68, 68) #444444 srgb(68,68,68)
       118: ( 69, 69, 69) #454545 grey27
        11: ( 70, 70, 70) #464646 srgb(70,70,70)
        21: ( 71, 71, 71) #474747 grey28
       119: ( 72, 72, 72) #484848 srgb(72,72,72)
        16: ( 73, 73, 73) #494949 srgb(73,73,73)
        11: ( 74, 74, 74) #4A4A4A grey29
        11: ( 75, 75, 75) #4B4B4B srgb(75,75,75)
        14: ( 76, 76, 76) #4C4C4C srgb(76,76,76)
        10: ( 77, 77, 77) #4D4D4D grey30
        12: ( 78, 78, 78) #4E4E4E srgb(78,78,78)
        15: ( 79, 79, 79) #4F4F4F grey31
        10: ( 80, 80, 80) #505050 srgb(80,80,80)
         8: ( 81, 81, 81) #515151 srgb(81,81,81)
         7: ( 82, 82, 82) #525252 grey32
         7: ( 83, 83, 83) #535353 srgb(83,83,83)
        12: ( 84, 84, 84) #545454 grey33
        15: ( 85, 85, 85) #555555 srgb(85,85,85)
         8: ( 86, 86, 86) #565656 srgb(86,86,86)
         7: ( 87, 87, 87) #575757 grey34
        11: ( 88, 88, 88) #585858 srgb(88,88,88)
         9: ( 89, 89, 89) #595959 grey35
         7: ( 90, 90, 90) #5A5A5A srgb(90,90,90)
         6: ( 91, 91, 91) #5B5B5B srgb(91,91,91)
        11: ( 92, 92, 92) #5C5C5C grey36
         8: ( 93, 93, 93) #5D5D5D srgb(93,93,93)
        20: ( 94, 94, 94) #5E5E5E grey37
         7: ( 95, 95, 95) #5F5F5F srgb(95,95,95)
        19: ( 96, 96, 96) #606060 srgb(96,96,96)
        13: ( 97, 97, 97) #616161 grey38
        81: ( 98, 98, 98) #626262 srgb(98,98,98)
        10: ( 99, 99, 99) #636363 grey39
         9: (100,100,100) #646464 srgb(100,100,100)
         6: (101,101,101) #656565 srgb(101,101,101)
         6: (102,102,102) #666666 grey40
         3: (103,103,103) #676767 srgb(103,103,103)
        51: (104,104,104) #686868 srgb(104,104,104)
         7: (105,105,105) #696969 DimGray
        10: (106,106,106) #6A6A6A srgb(106,106,106)
        10: (107,107,107) #6B6B6B grey42
         5: (108,108,108) #6C6C6C srgb(108,108,108)
        11: (109,109,109) #6D6D6D srgb(109,109,109)
         7: (110,110,110) #6E6E6E grey43
         7: (111,111,111) #6F6F6F srgb(111,111,111)
        16: (112,112,112) #707070 grey44
        51: (113,113,113) #717171 srgb(113,113,113)
        14: (114,114,114) #727272 srgb(114,114,114)
         4: (115,115,115) #737373 grey45
        10: (116,116,116) #747474 srgb(116,116,116)
         8: (117,117,117) #757575 grey46
        10: (118,118,118) #767676 srgb(118,118,118)
        35: (119,119,119) #777777 srgb(119,119,119)
        10: (120,120,120) #787878 grey47
         9: (121,121,121) #797979 srgb(121,121,121)
        10: (122,122,122) #7A7A7A grey48
         9: (123,123,123) #7B7B7B srgb(123,123,123)
        10: (124,124,124) #7C7C7C srgb(124,124,124)
         8: (125,125,125) #7D7D7D grey49
         8: (126,126,126) #7E7E7E gray
       176: (127,127,127) #7F7F7F grey50
        12: (128,128,128) #808080 fractal
         9: (129,129,129) #818181 srgb(129,129,129)
        10: (130,130,130) #828282 grey51
        13: (131,131,131) #838383 srgb(131,131,131)
         9: (132,132,132) #848484 srgb(132,132,132)
        16: (133,133,133) #858585 grey52
        73: (134,134,134) #868686 srgb(134,134,134)
       191: (135,135,135) #878787 grey53
        15: (136,136,136) #888888 srgb(136,136,136)
        12: (137,137,137) #898989 srgb(137,137,137)
        16: (138,138,138) #8A8A8A grey54
        17: (139,139,139) #8B8B8B srgb(139,139,139)
        22: (140,140,140) #8C8C8C grey55
         8: (141,141,141) #8D8D8D srgb(141,141,141)
        49: (142,142,142) #8E8E8E srgb(142,142,142)
        21: (143,143,143) #8F8F8F grey56
        10: (144,144,144) #909090 srgb(144,144,144)
         7: (145,145,145) #919191 grey57
         3: (146,146,146) #929292 srgb(146,146,146)
        16: (147,147,147) #939393 srgb(147,147,147)
        36: (148,148,148) #949494 grey58
        15: (149,149,149) #959595 srgb(149,149,149)
         6: (150,150,150) #969696 grey59
        12: (151,151,151) #979797 srgb(151,151,151)
        12: (152,152,152) #989898 srgb(152,152,152)
         7: (153,153,153) #999999 grey60
         6: (154,154,154) #9A9A9A srgb(154,154,154)
         6: (155,155,155) #9B9B9B srgb(155,155,155)
         9: (156,156,156) #9C9C9C grey61
       150: (157,157,157) #9D9D9D srgb(157,157,157)
        11: (158,158,158) #9E9E9E grey62
         4: (159,159,159) #9F9F9F srgb(159,159,159)
         7: (160,160,160) #A0A0A0 srgb(160,160,160)
         7: (161,161,161) #A1A1A1 grey63
         4: (162,162,162) #A2A2A2 srgb(162,162,162)
        12: (163,163,163) #A3A3A3 grey64
        10: (164,164,164) #A4A4A4 srgb(164,164,164)
         9: (165,165,165) #A5A5A5 srgb(165,165,165)
         7: (166,166,166) #A6A6A6 grey65
        11: (167,167,167) #A7A7A7 srgb(167,167,167)
        25: (168,168,168) #A8A8A8 grey66
        14: (169,169,169) #A9A9A9 DarkGray
        17: (170,170,170) #AAAAAA srgb(170,170,170)
        10: (171,171,171) #ABABAB grey67
        44: (172,172,172) #ACACAC srgb(172,172,172)
        12: (173,173,173) #ADADAD grey68
         8: (174,174,174) #AEAEAE srgb(174,174,174)
         9: (175,175,175) #AFAFAF srgb(175,175,175)
         9: (176,176,176) #B0B0B0 grey69
         8: (177,177,177) #B1B1B1 srgb(177,177,177)
         9: (178,178,178) #B2B2B2 srgb(178,178,178)
        14: (179,179,179) #B3B3B3 grey70
        15: (180,180,180) #B4B4B4 srgb(180,180,180)
        15: (181,181,181) #B5B5B5 grey71
         9: (182,182,182) #B6B6B6 srgb(182,182,182)
        10: (183,183,183) #B7B7B7 srgb(183,183,183)
        14: (184,184,184) #B8B8B8 grey72
        11: (185,185,185) #B9B9B9 srgb(185,185,185)
        19: (186,186,186) #BABABA grey73
        56: (187,187,187) #BBBBBB srgb(187,187,187)
       366: (188,188,188) #BCBCBC srgb(188,188,188)
       155: (189,189,189) #BDBDBD grey74
        18: (190,190,190) #BEBEBE grey
        29: (191,191,191) #BFBFBF grey75
       123: (192,192,192) #C0C0C0 silver
        18: (193,193,193) #C1C1C1 srgb(193,193,193)
       148: (194,194,194) #C2C2C2 grey76
        19: (195,195,195) #C3C3C3 srgb(195,195,195)
        10: (196,196,196) #C4C4C4 grey77
         7: (197,197,197) #C5C5C5 srgb(197,197,197)
        16: (198,198,198) #C6C6C6 srgb(198,198,198)
        11: (199,199,199) #C7C7C7 grey78
        17: (200,200,200) #C8C8C8 srgb(200,200,200)
        14: (201,201,201) #C9C9C9 grey79
        35: (202,202,202) #CACACA srgb(202,202,202)
         9: (203,203,203) #CBCBCB srgb(203,203,203)
        12: (204,204,204) #CCCCCC grey80
       153: (205,205,205) #CDCDCD srgb(205,205,205)
        10: (206,206,206) #CECECE srgb(206,206,206)
       107: (207,207,207) #CFCFCF grey81
         9: (208,208,208) #D0D0D0 srgb(208,208,208)
        16: (209,209,209) #D1D1D1 grey82
        17: (210,210,210) #D2D2D2 srgb(210,210,210)
        22: (211,211,211) #D3D3D3 LightGray
        17: (212,212,212) #D4D4D4 grey83
       334: (213,213,213) #D5D5D5 srgb(213,213,213)
        12: (214,214,214) #D6D6D6 grey84
        11: (215,215,215) #D7D7D7 srgb(215,215,215)
        13: (216,216,216) #D8D8D8 srgb(216,216,216)
        63: (217,217,217) #D9D9D9 grey85
        23: (218,218,218) #DADADA srgb(218,218,218)
        17: (219,219,219) #DBDBDB grey86
        19: (220,220,220) #DCDCDC gainsboro
        13: (221,221,221) #DDDDDD srgb(221,221,221)
        14: (222,222,222) #DEDEDE grey87
        30: (223,223,223) #DFDFDF srgb(223,223,223)
       120: (224,224,224) #E0E0E0 grey88
        23: (225,225,225) #E1E1E1 srgb(225,225,225)
        20: (226,226,226) #E2E2E2 srgb(226,226,226)
        16: (227,227,227) #E3E3E3 grey89
        23: (228,228,228) #E4E4E4 srgb(228,228,228)
        18: (229,229,229) #E5E5E5 grey90
        17: (230,230,230) #E6E6E6 srgb(230,230,230)
        16: (231,231,231) #E7E7E7 srgb(231,231,231)
       130: (232,232,232) #E8E8E8 grey91
        19: (233,233,233) #E9E9E9 srgb(233,233,233)
        28: (234,234,234) #EAEAEA srgb(234,234,234)
        33: (235,235,235) #EBEBEB grey92
       230: (236,236,236) #ECECEC srgb(236,236,236)
       252: (237,237,237) #EDEDED grey93
        37: (238,238,238) #EEEEEE srgb(238,238,238)
        53: (239,239,239) #EFEFEF srgb(239,239,239)
        35: (240,240,240) #F0F0F0 grey94
        58: (241,241,241) #F1F1F1 srgb(241,241,241)
        48: (242,242,242) #F2F2F2 grey95
        80: (243,243,243) #F3F3F3 srgb(243,243,243)
       101: (244,244,244) #F4F4F4 srgb(244,244,244)
       124: (245,245,245) #F5F5F5 grey96
       226: (246,246,246) #F6F6F6 srgb(246,246,246)
       170: (247,247,247) #F7F7F7 grey97
       380: (248,248,248) #F8F8F8 srgb(248,248,248)
       307: (249,249,249) #F9F9F9 srgb(249,249,249)
       406: (250,250,250) #FAFAFA grey98
      1012: (251,251,251) #FBFBFB srgb(251,251,251)
      1658: (252,252,252) #FCFCFC grey99
      4279: (253,253,253) #FDFDFD srgb(253,253,253)
     76560: (254,254,254) #FEFEFE srgb(254,254,254)
     14197: (255,255,255) #FFFFFF white
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgb(223,223,223)
  Matte color: grey74
  Transparent color: black
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 415x415+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: JPEG
  Quality: 79
  Orientation: Undefined
  Properties:
    date:create: 2019-12-21T23:19:03+00:00
    date:modify: 2019-12-21T23:18:51+00:00
    exif:Artist: Avinash singh
    exif:DateTimeDigitized: 2019:09:30 15:17:42
    exif:DateTimeOriginal: 2019:09:30 15:17:42
    exif:ExifOffset: 2136
    exif:SubSecTimeDigitized: 32
    exif:SubSecTimeOriginal: 32
    exif:WinXP-Author: 65, 0, 118, 0, 105, 0, 110, 0, 97, 0, 115, 0, 104, 0, 32, 0, 115, 0, 105, 0, 110, 0, 103, 0, 104, 0, 0, 0
    jpeg:colorspace: 2
    jpeg:sampling-factor: 2x2,1x1,1x1
    signature: 2b91d43d3440873eaeebf2291d7e1f1f86a169af6cfe5c876ca51c52d7e07e5a
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    xmp:CreateDate: 2019-09-30T15:17:42.315
  Profiles:
    Profile-exif: 4338 bytes
    Profile-xmp: 2817 bytes
  Artifacts:
    filename: jpeg-file.jpg
    verbose: true
  Tainted: False
  Filesize: 26138B
  Number pixels: 172225
  User time: 0.010u
  Elapsed time: 0:01.000
  Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org

Проверка кода скрипта (, который в моей системе находится по адресу /bin/lesspipe), в строке 133 утилита identifyвызывается без подробного флага.

В заключение, скорее всего, сценарий lesspipe в вашей системе относится к версии, в которой идентификация вызывается без подробного флага.

Версия файла lesspipe.sh в команде хранилища исходного кода lesspipeidentifyвызывается с флагом.

1
27.01.2020, 22:16

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