DD

̾Á°

½ñ¼°

ÀâÌÀ

dd ¤Ï»ØÄꤵ¤ì¤¿ÆþÎÏ¥Ö¥í¥Ã¥¯¥µ¥¤¥º (¥Ç¥Õ¥©¥ë¥È¤Ï 512 ¥Ð¥¤¥È) ¤Ç¡¢ °ìÅÙ¤Ë 1 ¥Ö¥í¥Ã¥¯¤òÆɤ߹þ¤à¡£ bs=bytes ¥ª¥×¥·¥ç¥ó¤¬»ØÄꤵ¤ì¤Æ¤¤¤Æ¡¢ sync, noerror, notrunc °Ê³°¤ÎÊÑ´¹¤¬»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¡¢ Æɤ߹þ¤ó¤ÀÁ´¤Æ¥Ç¡¼¥¿ (Í׵ᤵ¤ì¤¿¥µ¥¤¥º¤è¤ê¾®¤µ¤¯¤Æ¤â¤è¤¤) ¤ò½ÐÎÏ¥Ö¥í¥Ã¥¯¤Ë½ñ¤­½Ð¤¹¡£ ¤³¤Î½ÐÎÏ¥Ö¥í¥Ã¥¯¤Ï sync ÊÑ´¹¤¬»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¸Â¤ê¡¢ Æɤ߹þ¤Þ¤ì¤¿¤â¤Î¤ÈÀµ³Î¤ËƱ¤¸Ä¹¤µ¤ò»ý¤Ã¤Æ¤¤¤ë¡£

¤½¤ì°Ê³°¤Î¾ì¹ç¡¢(°ìÅÙ¤Ë 1 ¥Ö¥í¥Ã¥¯¤º¤ÄÆɤ߹þ¤Þ¤ì¤¿) ÆþÎϤϽèÍý¤µ¤ì¤ë¡£ ·ë²Ì¤Î½ÐÎϤϤޤȤá¤é¤ì¡¢»ØÄꤵ¤ì¤¿½ÐÎÏ¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤Î¥Ö¥í¥Ã¥¯¤Ë½ñ¤­½Ð¤µ¤ì¤ë¡£ ºÇ½ªÅª¤Ê½ÐÎÏ¥Ö¥í¥Ã¥¯¤Ïû¤¯¤Ê¤ë¤³¤È¤¬¤¢¤ë¡£

²¼µ­¤Î (¥Ð¥¤¥È¤Þ¤¿¤Ï¥Ö¥í¥Ã¥¯) ¤È¤¤¤Ã¤¿¿ôÃÍ¥ª¥×¥·¥ç¥ó¤Î¸å¤í¤Ë¤Ï¡¢ ¾è¿ô ¤Î¹àÌܤǵ󤲤ë¾è¿ô¤ò³¤±¤ÆÃÖ¤¯¤³¤È¤¬¤Ç¤­¤ë¡£ x ¤ò´Ö¤Ë¶´¤ó¤Ç¡¢¤³¤Î¤è¤¦¤Ê¿ôɽ¸½¤¬ 2 ¤Ä°Ê¾å³Ý¤±¤¢¤ï¤»¤ë¤³¤È¤â¤Ç¤­¤ë¡£  

¥ª¥×¥·¥ç¥ó

if=file

ɸ½àÆþÎϤÎÂå¤ï¤ê¤Ë¡¢¥Õ¥¡¥¤¥ë file ¤«¤éÆɤ߹þ¤à¡£

of=file

ɸ½à½ÐÎϤÎÂå¤ï¤ê¤Ë¡¢¥Õ¥¡¥¤¥ë file ¤Ø½ñ¤­½Ð¤¹¡£ conv=notrunc ¤¬Í¿¤¨¤é¤ì¤Ê¤¤¸Â¤ê¡¢ dd ¤Ï¥Õ¥¡¥¤¥ë file ¤ò0¥Ð¥¤¥È (¤â¤·¤¯¤Ï seek= ¤Ç»ØÄꤵ¤ì¤¿¥µ¥¤¥º) ¤Ë´Ý¤á¤ë¡£

ibs=bytes

°ìÅÙ¤Ë bytes ¥Ð¥¤¥ÈÆɤ߹þ¤à¡£¥Ç¥Õ¥©¥ë¥È¤Ï 512¡£

obs=bytes

°ìÅÙ¤Ë bytes ¥Ð¥¤¥È½ñ¤­½Ð¤¹¡£¥Ç¥Õ¥©¥ë¥È¤Ï 512¡£

bs=bytes

°ìÅÙ¤Ë bytes ¥Ð¥¤¥È¤ÎÆɤ߹þ¤ß¤È½ñ¤­½Ð¤·¤ò¤¹¤ë¡£ ibs ¤È obs ¤ò̵»ë¤¹¤ë¡£( sync, noerror, notrunc °Ê³°¤ÎÊÑ´¹¤¬°ì¤Ä¤â»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¡¢ ¡ÖÊ£¿ô¤Îû¤¤ÆþÎÏ¥Ö¥í¥Ã¥¯¤ò¤Þ¤È¤á¤º¡¢ ³ÆÆþÎÏ¥Ö¥í¥Ã¥¯¤òñÆȤΥ֥í¥Ã¥¯¤È¤·¤Æ½ÐÎϤ˥³¥Ô¡¼¤¹¤ë¡× ¤Èµ¬Äꤵ¤ì¤Æ¤¤¤ë¤Î¤Ç¡¢ bs ¤òÀßÄꤹ¤ë¤Î¤È ibs ¤È obs ¤ÎξÊý¤òƱ¤¸ÃͤËÀßÄꤹ¤ë¤Î¤È¤ÏÅù²Á¤Ç¤Ê¤¤¡£)

cbs=bytes

block ¤È unblock ¤ÎÊÑ´¹¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤ò»ØÄꤹ¤ë¡£

skip=blocks

¥³¥Ô¡¼³«»ÏÁ°¤Ë¡¢ ibs-byte ¤Ç»ØÄꤵ¤ì¤¿¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤Ç blocks ¥Ö¥í¥Ã¥¯Ê¬¤À¤±ÆþÎÏ¥Õ¥¡¥¤¥ë¤òÈô¤Ð¤¹¡£

seek=blocks

¥³¥Ô¡¼³«»ÏÁ°¤Ë¡¢ obs-byte ¤Ç»ØÄꤵ¤ì¤¿¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤Ç blocks ¥Ö¥í¥Ã¥¯Ê¬¤À¤±½ÐÎÏ¥Õ¥¡¥¤¥ë¤òÈô¤Ð¤¹¡£

count=blocks

ÆþÎÏ¥Õ¥¡¥¤¥ë¤Î½ª¤ê¤Þ¤ÇÁ´¤Æ¤Ç¤Ï¤Ê¤¯¡¢ ibs¤Ç»ØÄꤵ¤ì¤¿¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤Ç blocks ¥Ö¥í¥Ã¥¯Ê¬¤À¤±ÆþÎÏ¥Õ¥¡¥¤¥ë¤ò¥³¥Ô¡¼¤¹¤ë¡£

conv=CONVERSION[,CONVERSION]...

°ú¤­¿ô CONVERSION ¤Ç»ØÄꤵ¤ì¤¿¥Õ¥¡¥¤¥ëÊÑ´¹¤ò¹Ô¤¦¡£(¥³¥ó¥Þ¤ÎÁ°¸å¤Ë¥¹¥Ú¡¼¥¹¤òÃÖ¤«¤Ê¤¤¡£)

ÊÑ´¹¡§

ascii

EBCDIC¤«¤éASCII¤ËÊÑ´¹¤¹¤ë¡£

ebcdic

ASCII¤«¤éEBCDIC¤ËÊÑ´¹¤¹¤ë¡£

ibm

ASCII¤«¤éÊ̤Π(IBM¤Î) EBCDIC¤ËÊÑ´¹¤¹¤ë¡£

block

ÆþÎϤµ¤ì¤¿³Æ¹Ô¤ò¡¢ cbs ¥Ð¥¤¥È¤Ë¤·¤Æ½ÐÎϤ¹¤ë¡£ ²þ¹Ôʸ»ú¤ò¶õÇòʸ»ú¤ÇÃÖ¤­´¹¤¨¡¢ ɬÍפǤ¢¤ì¤ÐÊ£¿ô¤Î¶õÇòʸ»ú¤òµÍ¤á¤ë¡£

unblock

cbs ¤Ç¥µ¥¤¥º»ØÄꤵ¤ì¤¿³ÆÆþÎÏ¥Ö¥í¥Ã¥¯¤Ë¤Ä¤¤¤Æ¡¢ ËöÈø¤ÎϢ³¤·¤¿Ê£¿ô¤Î¶õÇòʸ»ú¤ò°ì¤Ä¤Î²þ¹Ôʸ»ú¤ËÊÑ´¹¤¹¤ë¡£

lcase

Âçʸ»ú¤ò¾®Ê¸»ú¤ËÊÑ´¹¤¹¤ë¡£

ucase

¾®Ê¸»ú¤òÂçʸ»ú¤ËÊÑ´¹¤¹¤ë¡£

swab

ÆþÎϥХ¤¥È¤ÎÁ´¤Æ¤Î (ÌõÃð¡§2¥Ð¥¤¥È¤º¤Ä¤Î) ¥Ú¥¢¤òÆþ¤ì´¹¤¨¤ë¡£ GNU dd ¤Ï¾¤È°ã¤¤¡¢´ñ¿ô¸Ä¤Î¥Ð¥¤¥È¤òÆɤ߹þ¤ó¤À¾ì¹ç¤Ë¤âÆ°ºî¤¹¤ë¡£ ´ñ¿ô¸Ä¤Î¾ì¹ç¡¢ ºÇ¸å¤Î¥Ð¥¤¥È¤Ï (Æþ¤ì´¹¤¨¤ë¥Ð¥¤¥È¤¬¤Ê¤¤¤Î¤Ç) ñ½ã¤Ë¥³¥Ô¡¼¤µ¤ì¤ë¡£

noerror

Æɤ߹þ¤ß¥¨¥é¡¼¤¬È¯À¸¤·¤Æ¤â·Ñ³¤¹¤ë¡£

notrunc

½ÐÎÏ¥Õ¥¡¥¤¥ë¤ò´Ý¤á¤Ê¤¤¡£

sync

³ÆÆþÎÏ¥Ö¥í¥Ã¥¯¤ËÂФ·¤Æ¡¢Â礭¤µ¤¬ ibs ¤Ë¤Ê¤ë¤Þ¤Ç¡¢Ï¢Â³¤·¤Æ¥¼¥í¤Î¥Ð¥¤¥È¤òµÍ¤á¤ë¡£

GNU ɸ½à¥ª¥×¥·¥ç¥ó

--help

ɸ½à½ÐÎϤ˻ÈÍÑÊýË¡¤Î¥á¥Ã¥»¡¼¥¸¤ò½ÐÎϤ·¤ÆÀµ¾ï½ªÎ»¤¹¤ë¡£

--version

ɸ½à½ÐÎϤ˥С¼¥¸¥ç¥ó¾ðÊó¤ò½ÐÎϤ·¤ÆÀµ¾ï½ªÎ»¤¹¤ë¡£

--

¥ª¥×¥·¥ç¥ó¥ê¥¹¥È¤ò½ªÎ»¤¹¤ë¡£

¾è¿ô

k

¥­¥í: Ä̾ï¥Ð¥¤¥È»ØÄê¤Ê¤é 2^10 = 1024¡¢½½¿Ê¥Ð¥¤¥È»ØÄê¤Ê¤é 10^3 = 1000

M

¥á¥¬: 2^20 = 1,048,576 ¤Þ¤¿¤Ï 10^6 = 1,000,000

G

¥®¥¬: 2^30 = 1,073,741,824 ¤Þ¤¿¤Ï 10^9 = 1,000,000,000

T

¥Æ¥é: 2^40 = 1,099,511,627,776 ¤Þ¤¿¤Ï 10^12 = 1,000,000,000,000

P

¥Ú¥¿: 2^50 = 1,125,899,906,842,624 ¤Þ¤¿¤Ï 10^15 = 1,000,000,000,000,000

E

¥¨¥¯¥µ: 2^60 = 1,152,921,504,606,846,976 ¤Þ¤¿¤Ï 10^18 = 1,000,000,000,000,000,000

Z

¥¼¥Ã¥¿: 2^70 = 1,180,591,620,717,411,303,424 ¤Þ¤¿¤Ï 10^21 = 1,000,000,000,000,000,000,000

Y

¥è¥Ã¥¿: 2^80 = 1,208,925,819,614,629,174,706,176 ¤Þ¤¿¤Ï 10^24 = 1,000,000,000,000,000,000,000,000

´Ä¶­ÊÑ¿ô

½àµò

Ãí°Õ

Index

̾Á°

½ñ¼°

ÀâÌÀ

¥ª¥×¥·¥ç¥ó

GNU ɸ½à¥ª¥×¥·¥ç¥ó

¾è¿ô

´Ä¶­ÊÑ¿ô

½àµò

Ãí°Õ