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Á¶È¸ | 326 |
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3.13 ln ¾Õ¿¡¼ ÆÄÀÏ¿¡ ´ëÇØ ¾ð±ÞÇÒ¶§¿¡ ÆÄÀϸ¶´Ù °íÀ¯ÀÇ ¹øÈ£¸¦ °¡Áø´Ù°í ÇßÁÒ? ÀÌ ¹øÈ£´Â ÆÄÀϸ¶´Ù ÀüºÎ ´Ù¸¨´Ï´Ù. ÀÌ ¹øÈ£¸¦ inode¶ó´Â ¿ë¾î·Î Á¤ÀÇÇÏ ´Âµ¥ "ls" ¶ó´Â ¸í·É¾î¿¡ "i"¶ó´Â ¿É¼ÇÀ» ºÙÀ̸é ÀÌ ¹øÈ£°¡ ȸ鿡 Ãâ·Â µÆÀ» °Ì´Ï´Ù. # ls -i [Enter] 362516 Book 12289 dev 3 net 20481 usr 307216 Install 14337 etc 1 proc 4097 var 196714 SRC 32769 home 18433 sbin 162 vmlinuz 161 System.map 16385 lib 163 src.tgz 164 vmlinuz.1 10241 bin 11 lost+found 168 test.txt 28673 boot 36865 mnt 2049 tmp # º¸¸é ¾Ë°ÚÁö¸¸ ÆÄÀϸ¸ inode¸¦ °¡Áø °ÍÀÌ ¾Æ´Ï¶ó µð·ºÅ丮µµ inode¸¦ °¡Áö ÁÒ? ¸®´ª½º¿¡¼´Â ¸ðµç µð¹ÙÀ̽º³ª µð·ºÅ丮¸¦ ÆÄÀÏ°³³äÀ¸·Î ÀνÄÇϱ⠶§¹®¿¡ ÀüºÎ inode¸¦ °¡Áö°Ô µË´Ï´Ù. ÀÚ ¿Ö ¿ì¸®°¡ Áö±Ý inode¿¡ ´ëÇؼ ¾ð±ÞÀ» Çϳĸé ÀÌÁ¦ºÎÅÍ ¹è¿ï "ln" ÀÌ ¶ó´Â ¸í·É¾î°¡ ÀÌ inode¿Í ¿¬°üÀÌ Àֱ⠶§¹®ÀÔ´Ï´Ù. ¸¸¾à¿¡ inode°¡ °°Àº ÆÄÀÏÀÌ ÀÖ´Ù¸é ÆÄÀÏÀ̸§ÀÌ ´Ù¸£´õ¶óµµ ÀÌ ÆÄÀÏÀº °°Àº ÆÄÀÏÀÌ µË´Ï´Ù. Áü ÀÛÀÌ Àß °¡Áö ¾ÊÁÒ? ÀÚ ±×·¯¸é °£´ÜÇÑ ¿¹¸¦ º¸µµ·Ï ÇսôÙ. # ls [Enter] Book bin home net test.txt vmlinuz Install boot lib proc tmp vmlinuz.1 SRC dev lost+found sbin usr System.map etc mnt src.tgz var # cat test.txt [Enter] This is Test File This is Text File # ln test.txt test1.txt [Enter] # ls [Enter] Book bin home net test.txt var Install boot lib proc test1.txt vmlinuz SRC dev lost+found sbin tmp vmlinuz.1 System.map etc mnt src.tgz usr # º¸¸é ¾Ë°ÚÁö¸¸ "ln"À̶ó´Â ¸í·É¾î·Î test1.txt ÆÄÀÏÀ» »ý¼ºÇß½À´Ï´Ù. »ý ¼ºÇÒ ÆÄÀÏÀ» ¸¶Áö¸· ¾Æ±Ô¸ÕÆ®·Î ÁöÁ¤ÇÏ¸é µÇ°Åµç¿ä. ÀÚ ±×·¯¸é ÆÄÀÏÀÇ inode¸¦ È®ÀÎÇØ º¾½Ã´Ù. # ls -i [Enter] 362516 Book 12289 dev 3 net 2049 tmp 307216 Install 14337 etc 1 proc 20481 usr 196714 SRC 32769 home 18433 sbin 4097 var 161 System.map 16385 lib 163 src.tgz 162 vmlinuz 10241 bin 11 lost+found 168 test.txt 164 vmlinuz.1 28673 boot 36865 mnt 168 test1.txt # ÀÚ º¸¸é ¾Ë°ÚÁö¸¸ Á¤¸»·Î µÎ ÆÄÀÏÀÇ inode°¡ °°ÁÒ? ÀÌ µÎ ÆÄÀÏÀº °°Àº ÆÄÀÏ ÀÔ´Ï´Ù. ¹°·Ð ÆÄÀÏÀÇ ³»¿ëµµ ´ç¿¬È÷ °°ÁÒ. # cat test1.txt [Enter] This is Test File This is Text File # Á¤¸»·Î °°ÁÒ? ±×·¯¸é ÇÑ ¹ø ³ªÁß¿¡ ¸¸µç test1.txt ÆÄÀÏÀ» ÇÊÀÚ°¡ ¼öÁ¤ÇØ º¸µµ·Ï ÇÏ°Ú½À´Ï´Ù. # cat test1.txt [Enter] This is Text File This is Text File # ¼öÁ¤ÇÑ ´ÙÀ½¿¡ ±× ³»¿ëÀ» Ãâ·ÂÇÏ°í ÀÖ½À´Ï´Ù. ±×·¯¸é À̹ø¿¡´Â ¼öÁ¤À» ÇÏ Áö ¾ÊÀº test.txt ÆÄÀÏÀÇ ³»¿ëÀ» È®ÀÎÇØ º¸µµ·Ï ÇÏ°Ú½À´Ï´Ù. # cat test.txt [Enter] This is Text File This is Text File # Á¤¸»·Î ¼öÁ¤ÀÌ µÇ¾úÁÒ? ½Å±âÇϱº¿ä. ±×·¯¸é À̹ø¿¡´Â test1.txt ÆÄÀÏÀ» »èÁ¦ÇØ º¸°Ú½À´Ï´Ù. # rm test1.txt [Enter] # ls [Enter] Book bin home net test.txt vmlinuz Install boot lib proc tmp vmlinuz.1 SRC dev lost+found sbin usr System.map etc mnt src.tgz var # cat test.txt [Enter] This is Text File This is Text File # »èÁ¦ÇÏ´Â °ÍÀº º°·Î ¿µÇâÀ» ¹ÞÁö ¾Ê´Â´Ù´Â °ÍÀ» ¾Ë¼ö ÀÖ½À´Ï´Ù. ±×·¯¸é ±× ¹Ý´ëÀÇ °æ¿ì¸¦ º¸µµ·Ï ÇսôÙ. # ls [Enter] Book bin home net test.txt var Install boot lib proc test1.txt vmlinuz SRC dev lost+found sbin tmp vmlinuz.1 System.map etc mnt src.tgz usr # rm test.txt [Enter] # cat test1.txt [Enter] This is Text File This is Text File # ¿ª½Ã ¿µÇâÀ» ¹ÞÁö ¾Ê´Â±º¿ä. ÀÏ´Ü "ln"¸í·É¾î·Î °°Àº ÆÄÀÏÀ» »ý¼ºÇÏ¸é ¼ö Á¤½Ã °°ÀÌ ¼öÁ¤µÇÁö¸¸ »èÁ¦ÇÒ¶§¿¡´Â ¾Æ¹«·± ¿µÇâÀÌ ¾ø´Ù´Â °ÍÀ» ¾Ë¼ö ÀÖ ½À´Ï´Ù. À§¿Í°°ÀÌ "ln"À̶ó´Â ¸í·É¾î·Î ¿¬°áµÈ »õ·Î¿î ÆÄÀÏÀ» »ý¼ºÇÏ´Â °ÍÀ» ÆÄÀϸµÅ©¶ó´Â ¿ë¾î·Î Ç¥ÇöÇÕ´Ï´Ù. ƯÈ÷ °°Àº inode¸¦ °°°Ô ¸¸µå´Â À§¿Í°°Àº ÆÄÀϸµÅ©¸¦ Çϵ帵ũ¶ó°í ¸»ÇÕ´Ï´Ù. ÀÌ ÇÏµå ¸µÅ©·Î ÆÄÀÏÀ» »ý¼ºÇϸé inode°¡ °°Àº µ¿ÀÏÇÑ ÆÄÀÏ°ú ¸¶Âù°¡Áö·Î µÇ±â ¶§¹®¿¡ ÆÄÀÏÀÇ Å©±â ¶ÇÇÑ °°½À´Ï´Ù. # ls -l test* [Enter] -rw-r--r-- 2 root root 37 Oct 16 20:43 test.txt -rw-r--r-- 2 root root 37 Oct 16 20:43 test1.txt # ÀÚ ±×·¯¸é À̹ø¿¡´Â ÆÄÀϸµÅ©Áß ¶Ç ´Ù¸¥ ½Éº¼¸¯ ¸µÅ©¿¡ ´ëÇÑ °ÍÀ» ¾Ë¾Æ º¸°Ú½À´Ï´Ù. ¿ª½Ã À̰͵µ °°Àº ÆÄÀÏÀ» »ý¼ºÇÏ´Â °Í°ú °°½À´Ï´Ù. ±×·¯³ª inode´Â ´Ù¸¨´Ï´Ù. ±×·¯´Ï ¿Ïº®ÇÏ°Ô °°Àº ÆÄÀÏÀº ¾Æ´ÏÁÒ. ±×·¯¸é ¿Ö °° Àº ÆÄÀÏÀ̶ó´Â ¸»À» »ç¿ëÇÒ±î¿ä? ±×°ÍÀº °£°£ÇÑ ¿¹¸¦ º¸¸é ±Ý¹æ ¾Ë¼ö ÀÖ ½À´Ï´Ù. # ls [Enter] Book bin home net test.txt vmlinuz Install boot lib proc tmp vmlinuz.1 SRC dev lost+found sbin usr System.map etc mnt src.tgz var # ln -s test.txt test1.txt [Enter] # cat test.txt [Enter] This is Text File This is Text File # cat test1.txt [Enter] This is Text File This is Text File # ÀÚ ÇÑ ¹ø º¸±â ¹Ù¶ø´Ï´Ù. "ln" À̶ó´Â ¸í·É¾î¿¡ "s"¶ó´Â ¿É¼ÇÀ» ºÙ¿©¼ »ç¿ëÇßÁÒ? ÀÌ ¿É¼ÇÀ» ºÙÀÌ°Ô µÇ¸é ½Éº¼¸¯ ¸µÅ©µÈ ÆÄÀÏÀ» »ý¼ºÇÏ°Ô µÇ´Â °ÍÀÔ´Ï´Ù. ¿ª½Ã ÆÄÀÏÀÇ ³»¿ëÀº °°±º¿ä. ±×·¯¸é ½Éº¼¸¯¸µÅ©µÈ ÆÄÀÏÀÇ ³» ¿ëÀ» ÇÊÀÚ°¡ ÇÑ ¹ø ¹Ù²ã º¸°Ú½À´Ï´Ù. # cat test1.txt [Enter] This is Test File This is Text File # cat test.txt [Enter] This is Test File This is Text File # test1.txt ÆÄÀÏÀÇ ³»¿ëÀ» ¹Ù²Ù±â¸¸ Çߴµ¥ test.txt ÆÄÀÏÀÇ ³»¿ëµµ ¹Ù²î ¾úÁÒ? ¿©±â±îÁö´Â ÇÏµå ¸µÅ©¶§¿Í Å©°Ô ´Þ¶óÁø Á¡À» ãÀ»¼ö ¾øÀ» °Ì´Ï´Ù. ±×·¯¸é ÇÑ ¹ø ÆÄÀÏÀÇ inode¸¦ È®ÀÎÇØ º¸±â ¹Ù¶ø´Ï´Ù. # ls -i [Enter] 362516 Book 12289 dev 3 net 2049 tmp 307216 Install 14337 etc 1 proc 20481 usr 196714 SRC 32769 home 18433 sbin 4097 var 161 System.map 16385 lib 163 src.tgz 162 vmlinuz 10241 bin 11 lost+found 168 test.txt 164 vmlinuz.1 28673 boot 36865 mnt 165 test1.txt # ¾Õ¿¡¼ ¾ð±ÞÇÑ°Í°ú ¸¶Âù°¡Áö·Î inode´Â ´Ù¸£±º¿ä. ±×·¯¸é ºÐ¸íÈ÷ ¼·Î ´Ù ¸¥ ÆÄÀÏÀε¥ ¾î¶»°Ô ÇϳªÀÇ ÆÄÀÏÀ» ¼öÁ¤ÇÏ¸é ´Ù¸¥ ÆÄÀϵµ °°ÀÌ ¼öÁ¤µÉ±î ¿ä? ±×°ÍÀº °£´ÜÇÕ´Ï´Ù. ¿ì¸®°¡ »ý¼ºÇÑ test1.txt ÆÄÀÏÀº ´ÜÁö test.txt ÆÄÀÏÀ» °¡¸£Å°´Â ¿ªÇÒ¸¸ ÇÏ´Â °ÍÀÔ´Ï´Ù. Áï ¿ì¸®°¡ test1.txt ÆÄÀÏÀ» ¼ö Á¤Çß´Ù´Â °ÍÀº test1.txt ÆÄÀÏÀÌ °¡¸£Å°´Â ÆÄÀÏÀ» ¼öÁ¤ÇÑ°Í°ú ¸¶Âù°¡Áö ¶ó´Â °ÍÀÔ´Ï´Ù. ¾î¶² °³³äÀÎÁö ÀÌÇØ°¡ °©´Ï±î? # ls -l test* [Enter] -rw-r--r-- 1 root root 37 Oct 16 21:00 test.txt lrwxrwxrwx 1 root root 8 Oct 16 20:58 test1.txt -> test.txt # º¸¸é ¾Ë°ÚÁö¸¸ ÆÄÀÏÀÇ Å©±â°¡ ´Ù¸¨´Ï´Ù. ½Éº¼¸¯ ¸µÅ©µÈ ÆÄÀÏÀÌ ÈξÀ Å©±â °¡ ÀÛÁÒ? ´ÜÁö °¡¸£Å°±â¸¸ ÇÏ°í ±×°Í¿¡ ´ëÇÑ Á¤º¸¸¸ °¡Áö°í Àֱ⠶§¹®¿¡ ÆÄÀÏ Å©±â°¡ ÀÛÀº °ÍÀÔ´Ï´Ù. <Âü°í ½ÃÀÛ> ÆÄÀÏ°ú µð·ºÅ丮ÀÇ ³»¿ëÀ» ±ä ÇüÅ×·Î Äð·ÂÇؼ º¸¸é Á¦ÀÏ ¾Õ¿¡ "-"À¸·Î µÇ¾î Àִ°͵µ ÀÖ°í "d"¶ó°í µÇ¾î ÀÖ´Â °Íµµ ÀÖÀ» °Ì´Ï´Ù. "-"À¸·Î µÇ¾î ÀÖ´Â °ÍÀº ÆÄÀÏÀÓÀ» ÀǹÌÇÏ´Â °ÍÀÌ°í "d"¶ó°í µÇ¾î ÀÖ´Â °ÍÀº µð·ºÅ丮 ¸¦ ÀǹÌÇÑ´Ù°í ¾Õ¿¡¼ ¾à°£ ¾ð±ÞÇßÁÒ? ¿©±â ½Éº¼¸¯ ¸µÅ©µÈ ÆÄÀÏÀ» º¸°Ô µÇ¸é "l"·Î µÇ¾î ÀÖÀ» °Ì´Ï´Ù. ÀÌ°ÍÀº ¹Ù·Î ½Éº¼¸¯ ¸µÅ©¸¦ ÀǹÌÇÏ´Â °Í ÀÔ´Ï´Ù. <Âü°í ³¡> ÀÚ ±×·¯¸é À̹ø¿¡´Â ½Éº¼¸¯ ¸µÅ©µÈ ÆÄÀÏÀ» »èÁ¦ÇØ º¸°Ú½À´Ï´Ù. # rm test1.txt [Enter] # cat test.txt [Enter] This is Test File This is Text File # º°´Ù¸¥ ¹ÝÀÀÀº ¾øÁÒ? À̹ø¿¡´Â ±× ¹Ý´ëÀÇ °æ¿ì¸¦ »ý°¢ÇØ º¾½Ã´Ù. # rm test.txt [Enter] # cat test1.txt [Enter] cat: test1.txt: No such file or directory # ¾Æ¸¶ ¿©·¯ºÐµéµµ ÁüÀÛÀ» ÇÏ°í ÀÖÀ» °Ì´Ï´Ù. °¡¸£Å°°í ÀÖ´Â ÆÄÀÏÀÌ »èÁ¦ µÇ¾î¼ Á¸ÀçÇÏÁö ¾ÊÀºµ¥ ±×°ÍÀ» °¡¸£Å°´Â ÆÄÀÏÀÌ Àǹ̰¡ ÀÖ°Ú½À´Ï±î? ´ç ¿¬È÷ ÆÄÀÏÀ» ãÀ»¼ö ¾ø´Ù´Â ¸Þ½ÃÁö°¡ ³ª¿À´Â °Ì´Ï´Ù. ÀÌÁ¦ ÇÏµå ¸µÅ©¿Í ½Éº¼¸¯ ¸µÅ©ÀÇ Â÷ÀÌÁ¡À» ¾Ë°ÚÁÒ? |