æçµæ´æ° 2019-01-02 setuid ã¨ã¯ãUNIX/Linux ã«ããã¦ãroot ãªã©ç¹å®ã®æ¨©éã§ããã°ã©ã ãã³ãã³ããå®è¡ããä»çµã¿ã§ããã âsetuid ã®åºç¤ UNIX/Linux ã«ãã㦠passwd ã³ãã³ãã§ãã¹ã¯ã¼ããå¤æ´ããããchsh ã³ãã³ãã§ãã°ã¤ã³æã®ã·ã§ã«ãå¤æ´ããããããã¨ãã§ããããããã®æ å ±ã¯ /etc/passwd ã /etc/shadow (ã¾ã㯠/etc/master.passwd) ãªã©ã«ä¿åããã¦ããã ããã§ãããèãã¦ã¿ãããã¤ã¾ã passwd ã³ãã³ãã chsh ã³ãã³ãã¯ã/etc/passwdã»/etc/shadow ãªã©ã®ãã¡ã¤ã«ãæ´æ°ããã¨ãããã¨ã ãããããªãããããããã®ãã¡ã¤ã«ã¯ãä¸è¬ã¦ã¼ã¶ãæ¸ãæãã§ããªãããã«ãã¼ããã·ã§ã³ãè¨å®ããã¦ããã % ls -l /etc/passwd /etc/mast
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