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which(ѰÕÒ“Ö´ÐÐÎļþ”)
[root@localhost home]# which [-a] command
-a : ½«ËùÓпÉÕÒµ½µÄÃüÁî¾ùÁгö£¬¶ø²»½ö½öÁгöµÚÒ»¸öÕÒµ½µÄÃüÁîÃû³Æ
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[root@localhost home]# which passwd
/usr/bin/passwd
whereis(ѰÕÒÌØ¶¨Îļþ)
[root@localhost home]# whereis [-bmsu] Îļþ»òĿ¼Ãû
[root@localhost home]# whereis passwd
passwd: /etc/passwd /usr/bin/passwd /usr/share/man/man5/passwd.5.gz ……
locate(ѰÕÒÎļþ)
[root@localhost home]# locate filename
[root@localhost home]# locate passwd
/lib/security/pam_passedqc.so
/lib/security/pam_unix_passwd.so
……
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2. ²éÕÒ²»ÍêÕû
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find (¹¦ÄÜÇ¿´ó¶øÖ±½ÓËÑË÷Ó²ÅÌ)
ʵÀýÒ»£º ½«¹ýȥϵͳÉÏ24СʱÄÚ¸ü¹ýµÄÄÚÈÝ£¨mtime£©µÄÎļþÁгö
[root@localhost home]# find / -mtime 0
# 0 : ±íʾµ±´ÓÏÖÔÚ¿ªÊ¼µ½24СʱǰÐ޸ĵͼÁгöÀ´¡£
# Èç¹ûÊÇ3ÌìǰµÄ24СʱÄڵľÍʹÓÃfind / -mtime 3,
# Òâ˼ÊÇ˵½ñÌì֮ǰµÄ3*24-4*24Сʱ֮¼äÐ޸ĹýµÄÁгöÀ´¡£
ʵÀý¶þ£º ²éÕÒ/etcÏÂÃæµÄÎļþ£¬Èç¹ûÎļþÈÕÆÚ±È /etc/passwdеľÍÁгöÀ´¡£
[root@localhost home]# find /etc -newer /etc/passwd
# -newer ÓÃÔÚʶ±ðÁ½¸öÎļþÖ®¼äµÄоɹØÏµ¡£
ʵÀýÈý£º ËÑË÷/homeÏÂÃæÊôÓÚpeterµÄÎļþ
[root@localhost home]# find /home -user peter
# ÕÒ³öÈκÎÒ»¸öÓû§ÔÚϵͳÖеÄËùÓÐÎļþ¡£
ʵÀýËÄ£º ËÑË÷ϵͳÖв»ÊôÓÚÈκÎÈ˵ÄÎļþ
[root@localhost home]# find / -nouser
#¿ÉÒÔÕÒ³öһЩÂÒÆß°ËÔãµÄÎļþ¡£
ʵÀýÎ壺 ËÑË÷ÎļþÃûΪpasswdµÄÎļþ¡£
[root@localhost home]# find / -name passwd
#ʹÓà -name ¿ÉÒÔËÑË÷ÎļþÃû¡£
ʵÀýÁù£º ËÑË÷ÎļþÊôÐÔΪ f£¨ÆÕͨÎļþ£©µÄÎļþ¡£
[root@localhost home]# find / -type f
#ÓÃÓÚÒ»Ð©ÌØÊâµÄ²éÕÒÎļþ¡£
ʵÀýÆß£ºËÑË÷ÎļþÖк¬ÓÐSGID/SUID/SBITµÄÊôÐÔ¡£
[root@localhost home]# find / -perm +7000
#7000¾ÍÊÇ ---s--s--t,Ö»
Ïà¹ØÎĵµ£º
/*
* linux/fs/inode.c
*
* (C) 1991 Linus Torvalds
*/
#include <string.h>
#include <sys/stat.h> // Îļþ״̬ͷÎļþ
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <asm/system.h>
......
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¡¡¡¡°²×°°üÎļþ½«½âѹËõÖÁphlinux_installĿ¼ÖÐ
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¡¡¡¡Ö´Ðа²×°½Å±¾
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