KDOC 73: odでファイルの中身をN進数で見る

• 作成
  • 2024-02-07 貴島
• レビュー
  • 2024-02-08 貴島

od コマンドは、バイナリファイルを8進数や16進数で表示するコマンド。実際にどう保存されているか理解するのに役立つ。

ユースケースを示す。

od README.md

|    0 | 20533 | 72133 | 74145 | 66164 | 67151 | 56564 | 64050 | 72164 |
|   20 | 71560 | 27472 | 63457 | 72151 | 72550 | 27142 | 67543 | 27555 |
|   40 | 64553 | 64552 | 60555 | 27504 | 67562 | 66541 | 60457 | 72143 |
|   60 | 67551 | 71556 | 73457 | 71157 | 63153 | 67554 | 71567 | 66057 |
|  100 | 67151 | 27164 | 66571 | 27554 | 60542 | 63544 | 27145 | 73163 |
|  120 | 24547 | 24135 | 72150 | 70164 | 35163 | 27457 | 64547 | 64164 |
|  140 | 61165 | 61456 | 66557 | 65457 | 65151 | 66551 | 42141 | 71057 |
|  160 | 60557 | 27555 | 61541 | 64564 | 67157 | 27563 | 67567 | 65562 |
|  200 | 66146 | 73557 | 27563 | 64554 | 72156 | 74456 | 66155 |  5051 |
|  220 | 20533 | 50133 | 61165 | 64554 | 64163 | 72040 | 20157 | 64507 |
|  240 | 44164 | 61165 | 50040 | 63541 | 71545 | 24135 | 72150 | 70164 |
|  260 | 35163 | 27457 | 64547 | 64164 | 61165 | 61456 | 66557 | 65457 |
|  300 | 65151 | 66551 | 42141 | 71057 | 60557 | 27555 | 61541 | 64564 |
|  320 | 67157 | 27563 | 67567 | 65562 | 66146 | 73557 | 27563 | 72560 |
|  340 | 66142 | 71551 | 27150 | 66571 | 27554 | 60542 | 63544 | 27145 |
|  360 | 73163 | 24547 | 24135 | 72150 | 70164 | 35163 | 27457 | 64547 |
|  400 | 64164 | 61165 | 61456 | 66557 | 65457 | 65151 | 66551 | 42141 |
|  420 | 71057 | 60557 | 27555 | 61541 | 64564 | 67157 | 27563 | 67567 |
|  440 | 65562 | 66146 | 73557 | 27563 | 72560 | 66142 | 71551 | 27150 |
|  460 | 66571 | 24554 |  5012 | 64474 | 63555 | 71440 | 61562 | 21075 |
|  500 | 72150 | 70164 | 35163 | 27457 | 71565 | 71145 | 64455 | 60555 |
|  520 | 62547 | 27163 | 64547 | 64164 | 61165 | 71565 | 71145 | 67543 |
|  540 | 72156 | 67145 | 27164 | 67543 | 27555 | 30461 | 34465 | 33465 |
|  560 | 30071 | 30457 | 31071 | 31061 | 31066 | 30070 | 33455 | 33460 |
|  600 | 61470 | 33462 | 26461 | 30144 | 60543 | 32055 | 33543 | 26542 |
|  620 | 60471 | 34141 | 62455 | 32144 | 32545 | 32141 | 61542 | 61143 |
|  640 | 27066 | 67160 | 21147 | 73440 | 62151 | 64164 | 21075 | 30064 |
|  660 | 21045 | 60440 | 64554 | 67147 | 71075 | 63551 | 72150 |  5076 |
|  700 | 21412 | 47440 | 63562 | 51040 | 60557 | 20155 | 67556 | 62564 |
|  720 |  5163 | 26412 | 47040 | 72157 | 71545 | 61040 | 20171 | 66505 |
|  740 | 61541 | 20163 | 60560 | 65543 | 63541 | 20145 | 71117 | 20147 |
|  760 | 67522 | 66541 | 64040 | 72164 | 71560 | 27472 | 63457 | 72151 |
| 1000 | 72550 | 27142 | 67543 | 27555 | 71157 | 26547 | 67562 | 66541 |
| 1020 | 67457 | 63562 | 71055 | 60557 |  5155 | 25412 | 70040 | 67562 |
| 1040 | 72544 | 72143 | 67551 | 35156 | 64040 | 72164 | 71560 | 27472 |
| 1060 | 65457 | 65151 | 66551 | 62141 | 63456 | 72151 | 72550 | 27142 |
| 1100 | 67551 | 71057 | 60557 | 27555 | 25412 | 71440 | 60564 | 64547 |
| 1120 | 63556 | 20072 | 72150 | 70164 | 35163 | 27457 | 67562 | 66541 |
| 1140 | 71455 | 60564 | 64547 | 63556 | 64056 | 71145 | 65557 | 60565 |
| 1160 | 70160 | 61456 | 66557 |  5057 | 20053 | 67555 | 64556 | 67564 |
| 1200 | 35162 | 64040 | 72164 | 71560 | 27472 | 65457 | 65151 | 66551 |
| 1220 | 62141 | 63456 | 72151 | 72550 | 27142 | 67551 | 71057 | 60557 |
| 1240 | 57555 | 70165 | 72160 | 66551 | 27545 |  5012 | 21443 | 62040 |
| 1260 | 73145 | 66145 | 70157 | 62555 | 72156 |  5012 | 60140 | 71540 |
| 1300 | 62550 | 66154 | 66412 | 65541 | 20145 | 71157 | 31147 | 72150 |
| 1320 | 66155 | 66412 | 65541 | 20145 | 62563 | 73162 | 71145 | 60012 |
| 1340 | 60140 |  5012 | 67450 | 72160 | 67551 | 60556 | 24554 | 61440 |
| 1360 | 70157 | 20171 | 64546 | 62554 |  5163 | 60140 | 71540 | 62550 |
| 1400 | 66154 | 62012 | 61557 | 62553 | 20162 | 72562 | 20156 | 26455 |
| 1420 | 62544 | 60564 | 64143 | 26440 | 67055 | 66541 | 20145 | 62562 |
| 1440 | 62554 | 71541 | 20145 | 64147 | 71143 | 64456 | 27557 | 64553 |
| 1460 | 64552 | 60555 | 27544 | 67562 | 66541 | 71137 | 66145 | 60545 |
| 1500 | 62563 | 66072 | 72141 | 71545 | 20164 | 23046 | 56040 | 62012 |
| 1520 | 61557 | 62553 | 20162 | 70143 | 71040 | 66145 | 60545 | 62563 |
| 1540 | 27472 | 67562 | 66541 | 70057 | 61165 | 64554 | 20143 | 20056 |
| 1560 | 23046 | 56040 | 71412 | 62165 | 20157 | 64143 | 73557 | 20156 |
| 1600 | 51055 | 22040 | 51525 | 51105 | 22072 | 51525 | 51105 | 27040 |
| 1620 | 70057 | 61165 | 64554 |  5143 | 60140 |  5140 |       |       |
| 1634 |       |       |       |       |       |       |       |       |

od -c README.md

|    0 | [  | !  | [  | t  | e  | x  | t | l  | i  | n  | t  | ]  | (  | h  | t  | t  |
|   20 | p  | s  | :  | /  | /  | g  | i | t  | h  | u  | b  | .  | c  | o  | m  | /  |
|   40 | k  | i  | j  | i  | m  | a  | D | /  | r  | o  | a  | m  | /  | a  | c  | t  |
|   60 | i  | o  | n  | s  | /  | w  | o | r  | k  | f  | l  | o  | w  | s  | /  | l  |
|  100 | i  | n  | t  | .  | y  | m  | l | /  | b  | a  | d  | g  | e  | .  | s  | v  |
|  120 | g  | )  | ]  | (  | h  | t  | t | p  | s  | :  | /  | /  | g  | i  | t  | h  |
|  140 | u  | b  | .  | c  | o  | m  | / | k  | i  | j  | i  | m  | a  | D  | /  | r  |
|  160 | o  | a  | m  | /  | a  | c  | t | i  | o  | n  | s  | /  | w  | o  | r  | k  |
|  200 | f  | l  | o  | w  | s  | /  | l | i  | n  | t  | .  | y  | m  | l  | )  | \n |
|  220 | [  | !  | [  | P  | u  | b  | l | i  | s  | h  | t  | o  | G  | i  |    |    |
|  240 | t  | H  | u  | b  | P  | a  | g | e  | s  | ]  | (  | h  | t  | t  | p  |    |
|  260 | s  | :  | /  | /  | g  | i  | t | h  | u  | b  | .  | c  | o  | m  | /  | k  |
|  300 | i  | j  | i  | m  | a  | D  | / | r  | o  | a  | m  | /  | a  | c  | t  | i  |
|  320 | o  | n  | s  | /  | w  | o  | r | k  | f  | l  | o  | w  | s  | /  | p  | u  |
|  340 | b  | l  | i  | s  | h  | .  | y | m  | l  | /  | b  | a  | d  | g  | e  | .  |
|  360 | s  | v  | g  | )  | ]  | (  | h | t  | t  | p  | s  | :  | /  | /  | g  | i  |
|  400 | t  | h  | u  | b  | .  | c  | o | m  | /  | k  | i  | j  | i  | m  | a  | D  |
|  420 | /  | r  | o  | a  | m  | /  | a | c  | t  | i  | o  | n  | s  | /  | w  | o  |
|  440 | r  | k  | f  | l  | o  | w  | s | /  | p  | u  | b  | l  | i  | s  | h  | .  |
|  460 | y  | m  | l  | )  | \n | \n | < | i  | m  | g  | s  | r  | c  | =  | "  |    |
|  500 | h  | t  | t  | p  | s  | :  | / | /  | u  | s  | e  | r  | -  | i  | m  | a  |
|  520 | g  | e  | s  | .  | g  | i  | t | h  | u  | b  | u  | s  | e  | r  | c  | o  |
|  540 | n  | t  | e  | n  | t  | .  | c | o  | m  | /  | 1  | 1  | 5  | 9  | 5  | 7  |
|  560 | 9  | 0  | /  | 1  | 9  | 2  | 1 | 2  | 6  | 2  | 8  | 0  | -  | 7  | 0  | 7  |
|  600 | 8  | c  | 2  | 7  | 1  | -  | d | 0  | c  | a  | -  | 4  | c  | 7  | b  | -  |
|  620 | 9  | a  | a  | 8  | -  | e  | d | 4  | e  | 5  | a  | 4  | b  | c  | c  | b  |
|  640 | 6  | .  | p  | n  | g  | "  | w | i  | d  | t  | h  | =  | "  | 4  | 0  |    |
|  660 | %  | "  | a  | l  | i  | g  | n | =  | r  | i  | g  | h  | t  | >  | \n |    |
|  700 | \n | #  | O  | r  | g  | R  | o | a  | m  | n  | o  | t  | e  |    |    |    |
|  720 | s  | \n | \n | -  | N  | o  | t | e  | s  | b  | y  | E  | m  |    |    |    |
|  740 | a  | c  | s  | p  | a  | c  | k | a  | g  | e  | O  | r  | g  |    |    |    |
|  760 | R  | o  | a  | m  | h  | t  | t | p  | s  | :  | /  | /  | g  | i  | t  |    |
| 1000 | h  | u  | b  | .  | c  | o  | m | /  | o  | r  | g  | -  | r  | o  | a  | m  |
| 1020 | /  | o  | r  | g  | -  | r  | o | a  | m  | \n | \n | +  | p  | r  | o  |    |
| 1040 | d  | u  | c  | t  | i  | o  | n | :  | h  | t  | t  | p  | s  | :  | /  |    |
| 1060 | /  | k  | i  | j  | i  | m  | a | d  | .  | g  | i  | t  | h  | u  | b  | .  |
| 1100 | i  | o  | /  | r  | o  | a  | m | /  | \n | +  | s  | t  | a  | g  | i  |    |
| 1120 | n  | g  | :  | h  | t  | t  | p | s  | :  | /  | /  | r  | o  | a  | m  |    |
| 1140 | -  | s  | t  | a  | g  | i  | n | g  | .  | h  | e  | r  | o  | k  | u  | a  |
| 1160 | p  | p  | .  | c  | o  | m  | / | \n | +  | m  | o  | n  | i  | t  | o  |    |
| 1200 | r  | :  | h  | t  | t  | p  | s | :  | /  | /  | k  | i  | j  | i  | m  |    |
| 1220 | a  | d  | .  | g  | i  | t  | h | u  | b  | .  | i  | o  | /  | r  | o  | a  |
| 1240 | m  | _  | u  | p  | p  | t  | i | m  | e  | /  | \n | \n | #  | #  | d  |    |
| 1260 | e  | v  | e  | l  | o  | p  | m | e  | n  | t  | \n | \n | `  | `  | `  | s  |
| 1300 | h  | e  | l  | l  | \n | m  | a | k  | e  | o  | r  | g  | 2  | h  | t  |    |
| 1320 | m  | l  | \n | m  | a  | k  | e | s  | e  | r  | v  | e  | r  | \n | `  |    |
| 1340 | `  | `  | \n | \n | (  | o  | p | t  | i  | o  | n  | a  | l  | )  | c  |    |
| 1360 | o  | p  | y  | f  | i  | l  | e | s  | \n | `  | `  | `  | s  | h  | e  |    |
| 1400 | l  | l  | \n | d  | o  | c  | k | e  | r  | r  | u  | n  | -  | -  |    |    |
| 1420 | d  | e  | t  | a  | c  | h  | - | -  | n  | a  | m  | e  | r  | e  |    |    |
| 1440 | l  | e  | a  | s  | e  | g  | h | c  | r  | .  | i  | o  | /  | k  | i  |    |
| 1460 | j  | i  | m  | a  | d  | /  | r | o  | a  | m  | _  | r  | e  | l  | e  | a  |
| 1500 | s  | e  | :  | l  | a  | t  | e | s  | t  | &  | &  | \  | \n | d  |    |    |
| 1520 | o  | c  | k  | e  | r  | c  | p | r  | e  | l  | e  | a  | s  | e  |    |    |
| 1540 | :  | /  | r  | o  | a  | m  | / | p  | u  | b  | l  | i  | c  | .  |    |    |
| 1560 | &  | &  | \  | \n | s  | u  | d | o  | c  | h  | o  | w  | n  |    |    |    |
| 1600 | -  | R  | $  | U  | S  | E  | R | :  | $  | U  | S  | E  | R  | .  |    |    |
| 1620 | /  | p  | u  | b  | l  | i  | c | \n | `  | `  | `  | \n |    |    |    |    |
| 1634 |    |    |    |    |    |    |   |    |    |    |    |    |    |    |    |    |

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