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Ê£¿ô¤Î°µ½Ì¤µ¤ì¤¿¥Õ¥¡¥¤¥ë¤ÏÏ¢·ë¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£¤³¤Î¾ì¹ç¡¢ gunzip ¤Ï°ìÅÙ¤ËÁ´¤Æ¤ÎÍ×ÁǤòÃê½Ð¤¹¤ë¤Ç¤·¤ç¤¦¡£¤â¤·°ì¤Ä¤ÎÍ×ÁǤ¬Â»½ý ¤ò¼õ¤±¤¿¤Ê¤é¡¢Â»½ý¤·¤¿Í×ÁǤòºï½ü¤·¤¿¸å¤Ë¾¤ÎÍ×ÁǤò¤Ê¤ª¼è¤êÌ᤹¤³¤È¤¬¤Ç¤­ ¤ë¤«¤â¤·¤ì¤Þ¤»¤ó¡£Ä̾ïÁ´¤Æ¤ÎÍ×ÁǤ¬²òÅव¤ì¤Æ¤«¤é°ìµ¤¤ËºÆ°µ½Ì¤¹¤ë¤È¡¢¤è¤ê Îɤ¤°µ½Ì¤ËãÀ®¤Ç¤­¤Þ¤¹¡£

¤³¤ì¤Ï gzip ¥Õ¥¡¥¤¥ë¤òÏ¢·ë¤¹¤ëÎã¤Ç¤¹:

gzip -c file1  > foo.gz
gzip -c file2 >> foo.gz

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gunzip -c foo

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cat file1 file2

.gz’ ¥Õ¥¡¥¤¥ë¤Î°ì¤Ä¤ÎÍ×ÁǤ¬Â»½ý¤·¤¿¾ì¹ç¡¢Â¾¤ÎÍ×ÁǤϤʤª¼è¤êÌ᤹¤³ ¤È¤¬¤Ç¤­¤Þ¤¹ (¤â¤·Â»½ý¤ò¼õ¤±¤¿Í×ÁǤ¬¼è¤ê½ü¤«¤ì¤ì¤Ð)¡£¤·¤«¤·¤Ê¤¬¤é¡¢°ìÅÙ ¤ËÁ´¤Æ¤ÎÍ×ÁǤò°µ½Ì¤¹¤ë¤³¤È¤Ë¤è¤Ã¤Æ¡¢¤è¤êÎɤ¤°µ½Ì¤òÆÀ¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹:

cat file1 file2 | gzip > foo.gz

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gzip -c file1 file2 > foo.gz

¤â¤·¤è¤êÎɤ¤°µ½Ì¤òÆÀ¤ë¤¿¤á¤Ë¡¢Ï¢·ë¤µ¤ì¤¿¥Õ¥¡¥¤¥ë¤òºÆ°µ½Ì¤·¤¿¤¤¤Ê¤é¡¢¤³¤¦ ¤·¤Þ¤¹:

zcat old.gz | gzip > new.gz

¤â¤·°µ½Ì¤µ¤ì¤¿¥Õ¥¡¥¤¥ë¤¬¤¤¤¯¤Ä¤â¤ÎÍ×ÁǤ«¤éÀ®¤êΩ¤Ã¤Æ¤¤¤ë¤Ê¤é¡¢ ‘--list’ ¥ª¥×¥·¥ç¥ó¤Ë¤è¤Ã¤ÆÊó¹ð¤µ¤ì¤ë¡¢²òÅव¤ì¤¿Â礭¤µ¤È CRC ¤ÏºÇ ¸å¤ÎÍ×ÁǤÀ¤±¤ËŬÍѤµ¤ì¤Þ¤¹¡£¤â¤·¤¢¤é¤æ¤ëÍ×ÁǤËÂФ·¤Æ²òÅव¤ì¤¿Â礭¤µ¤¬É¬ Íפʤ顢¤³¤¦¤Ç¤­¤Þ¤¹:

zcat file.gz | wc -c

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