{"id":272924,"date":"2023-05-22T04:04:16","date_gmt":"2023-05-21T20:04:16","guid":{"rendered":"https:\/\/lrxjmw.cn\/lyhglpzwjjdq.html"},"modified":"2023-05-22T04:04:16","modified_gmt":"2023-05-21T20:04:16","slug":"lyhglpzwjjdq","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/lyhglpzwjjdq.html","title":{"rendered":"Linux\u7528\u6237\u7ba1\u7406\u914d\u7f6e\u6587\u4ef6\u89e3\u8bfb\u5668"},"content":{"rendered":"

\u4e00\u3001\u64cd\u4f5c\u7cfb\u7edf<\/a>\u4e2d\u7684\u7528\u6237\u7ba1\u7406\u76f8\u5173\u914d\u7f6e\u6587\u4ef6\u5256\u6790<\/p>\n

Linux\u7cfb\u7edf\u4e0b\u7528\u6237\u4ee5\u53ca\u6743\u9650\u7ba1\u7406_260617<\/p>\n

Linux<\/a>\u7528\u6237\u5728\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u8fdb\u884c\u65e5\u5e38\u7ba1\u7406\u548c\u7ef4\u62a4\uff0c\u6d89\u53ca\u5230\u7684\u76f8\u5173\u914d\u7f6e\u6587\u4ef6\u5982\u4e0b\uff1a<\/p>\n

\/etc\/passwd\u4fdd\u5b58\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u6240\u6709\u7528\u6237\u4fe1\u606f<\/p>\n

root:x:0:0:root:\/root:\/bin\/bash<\/p>\n

Linux\u7cfb\u7edf\u4e0b\u7528\u6237\u4ee5\u53ca\u6743\u9650\u7ba1\u7406_260291<\/p>\n

name:password:UID:GID:GECOS:directory:shell<\/p>\n

\u7528\u6237\u540d\uff1a\u5bc6\u7801\u5360\u4f4d\u7b26\uff1auid\uff1a\u57fa\u672c\u7ec4\u7684gid\uff1a\u7528\u6237\u4fe1\u606f\u8bb0\u5f55\u6570\u7ec4\uff1a\u7528\u6237\u7684\u5bb6\u76ee\u5f55\uff1a\u7528\u6237\u767b\u5165\u7cfb\u7edf\u540e\u4f7f\u7528\u7684\u547d\u4ee4<\/a>\u89e3\u6790\u5668<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

Linux\u7cfb\u7edf\u4e0b\u7528\u6237\u4ee5\u53ca\u6743\u9650\u7ba1\u7406_260524<\/p>\n

\u6570\u7ec41\uff1a\u7528\u6237\u540d<\/p>\n

\u6570\u7ec42\uff1a\u5bc6\u7801\u5360\u4f4d\u7b26<\/p>\n

\u6570\u7ec43\uff1a\u7528\u6237\u7684UID0\u8868\u793a\u8d85\u7ea7\u7528\u6237\uff0c500-60000\u666e\u901a\u7528\u6237qq for linux\uff0c1-499\u7a0b\u5e8f\u7528\u6237<\/p>\n

\u6570\u7ec44\uff1a\u57fa\u672c\u7ec4\u7684GID\u5148\u6709\u7ec4\u624d\u6709\u7528\u6237<\/p>\n

\u6570\u7ec45\uff1a\u7528\u6237\u4fe1\u606f\u8bb0\u5f55\u6570\u7ec4<\/p>\n

\u6570\u7ec46\uff1a\u7528\u6237\u7684\u5bb6\u76ee\u5f55<\/p>\n

\u6570\u7ec47\uff1a\u7528\u6237\u767b\u5165\u7cfb\u7edf\u540e\u4f7f\u7528\u7684\u547d\u4ee4\u7c7b\u5e93<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

UID\uff1a0\u8868\u793a\u8d85\u7ea7\u7528\u6237\uff0c\u7a0b\u5e8f\u7528\u6237\uff081-499\uff09linux\u7cfb\u7edf\u7528\u6237\u6743\u9650\u7ba1\u7406<\/strong>\uff0c\u666e\u901a\u7528\u6237\uff08500\u4ee5\u4e0a60000\u4ee5\u4e0b\uff09\uff0c\u6309\u7167uid\u5c06\u7528\u6237\u5206\u4e3a\u4ee5\u4e0a\u4e09\u7c7b\u7528\u6237\u3002<\/p>\n

\/etc\/shdaow\u4fdd\u5b58\u7528\u6237\u5bc6\u7801\uff08\u4ee5\u52a0\u5bc6\u65b9\u5f0f\u4fdd\u5b58\uff09<\/p>\n

[root@f\u00fa\/]#cat\/etc\/shadow<\/p>\n

root:$6$Jw5XsDvvNBH5Xoq.:19180:0:99999:7:::<\/p>\n

\u7528\u6237\u540d\uff1a\u5bc6\u7801\uff08\u52a0\u5bc6\u540e\u7684\u5b57\u7b26\u4e32\uff09\uff1a\u8fd1\u6765\u4e00\u6b21\u7684\u66f4\u6539\u65f6\u95f4\u3010\u8ddd\u79bb1970\u5e741\u67081\u65e5\u7684\u8ddd\u79bb\u3011\uff1a\u5bc6\u7801\u7684\u6700\u77ed\u6709\u6548\u671f\uff1a\u5bc6\u7801\u7684\u6700\u957f\u6709\u6548\u671f\uff1a\u5bc6\u7801\u8fc7\u671f\u524d7\u5929\u8b66\u544a\uff1a\u5bc6\u7801\u7684\u4e0d\u6d3b\u8dc3\u671f\uff1a\u7528\u6237\u7684\u5931\u6548\u65f6\u95f4\uff1a\u4fdd\u7559\u6570\u7ec4<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6570\u7ec41\uff1a\u7528\u6237\u540d<\/p>\n

*\u6570\u7ec42\uff1a\u7528\u6237\u7684\u5bc6\u7801\u52a0\u5bc6\u540e\u7684\u5b57\u7b26\u4e32\uff08sha\uff09<\/p>\n

\u6570\u7ec43\uff1a\u8ddd\u79bb1970\/1\/1\u5bc6\u7801\u8fd1\u6765\u4e00\u6b21\u66f4\u6539\u7684\u65f6\u95f4<\/p>\n

\u6570\u7ec44\uff1a\u5bc6\u7801\u7684\u6700\u77ed\u6709\u6548\u671f<\/p>\n

*\u6570\u7ec45\uff1a\u5bc6\u7801\u7684\u6700\u957f\u6709\u6548\u671f\uff08\u5efa\u8bae\u65f6\u95f490\uff09<\/p>\n

\u6570\u7ec46\uff1a\u5bc6\u7801\u8fc7\u671f\u524d7\u5929\u8b66\u544a<\/p>\n

\u6570\u7ec47\uff1a\u5bc6\u7801\u7684\u4e0d\u6d3b\u8dc3\u671f<\/p>\n

\u6570\u7ec48\uff1a\u7528\u6237\u7684\u5931\u6548\u65f6\u95f4<\/p>\n

\u6570\u7ec49\uff1a\u4fdd\u7559\u6570\u7ec4<\/p>\n

\u8fd9\u4e2a\u6570\u7ec4\u76ee\u524d\u6ca1\u6709\u4f7f\u7528\uff0c\u7b49\u5f85\u65b0\u529f\u80fd\u7684\u52a0\u5165\u3002<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\/etc\/group\u4fdd\u5b58\u7ec4\u4fe1\u606f<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

root:x:0:<\/p>\n

bin:x:1:bin,daemon<\/p>\n

\u7ec4\u540d\uff1a\u7ec4\u7684\u5bc6\u7801\u5360\u4f4d\u7b26\uff1agid\uff1a\u9644\u52a0\u7ec4\u6210\u5458<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\/etc\/login.defs\u7528\u6237\u5c5e\u6027\u9650\u5236,\u5bc6\u7801\u8fc7\u671f\u65f6\u95f4,\u5bc6\u7801\u6700\u5927\u5bbd\u5ea6\u7b49\u9650\u5236<\/p>\n

\/etc\/default\/useradd\u663e\u793a\u6216\u4fee\u6539\u9ed8\u8ba4\u7684useradd\u914d\u7f6e\u6587\u4ef6<\/p>\n

\u4e8c\u3001\u6587\u4ef6\u53ca\u76ee\u5f55\u6743\u9650<\/p>\n

\u6587\u4ef6\u4e0e\u6743\u9650\uff1a\u5373\u6587\u4ef6\u6216\u5219\u76ee\u5f55\u5c5e\u4e8e\u90a3\u4e2a\u7528\u6237\uff0c\u5c5e\u4e8e\u90a3\u4e2a\u7ec4linux\u7cfb\u7edf\u7528\u6237\u6743\u9650\u7ba1\u7406<\/strong>\u5b66linux\u6709\u524d\u9014\u5417\uff0c\u4e0d\u540c\u7684\u7528\u6237\u80fd\u5bf9\u8be5\u6587\u4ef6\u8fdb\u884c\u4f55\u79cd\u64cd\u4f5c\u3002<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6ce8\uff1a<\/p>\n

\u67e5\u770b\u6587\u4ef6\u6743\u9650\uff1als-l\u6587\u4ef6<\/p>\n

\u67e5\u770b\u76ee\u5f55\u6743\u9650\uff1als-ld\u76ee\u5f55<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

r\u30104\u3011<\/p>\n

w\u30102\u3011<\/p>\n

x\u30101\u3011<\/p>\n

\u6587\u4ef6<\/p>\n

read\u8bfb\u53d6\u6587\u4ef6<\/p>\n

write\u5199\u5165\u6587\u4ef6<\/p>\n

\u53ef\u6267\u884c\u6743\u9650<\/p>\n

\u76ee\u5f55<\/p>\n

\u53ef\u4ee5\u67e5\u770b\u76ee\u5f55\u6587\u4ef6<\/p>\n

\u53ef\u4ee5\u589e\u5220\u6587\u4ef6<\/p>\n

\u53ef\u4ee5\u6b65\u5165\u76ee\u5f55<\/p>\n

[root@f\u00faDesktop]#ls-l\/root\/Desktop\/<\/p>\n

total70584<\/p>\n

lrwxrwxrwx.1rootroot18Jul1414:32123.txt->\/root\/Desktop\/ming<\/p>\n

-rw-r--r--.\uff08\u6587\u4ef6\u5c5e\u6027\uff091\uff08\u94fe\u63a5\u4e2a\u6570\uff1a\u8868\u793a\u6307\u5411\u5b83\u7684\u94fe\u63a5\u6587\u4ef6\u7684\u4e2a\u6570\uff09root\uff08\u6240\u5c5e\u8005\uff09root\uff08\u6240\u5c5e\u7ec4\uff090\uff08\u6587\u4ef6\u5927\u5c0f\uff1a\u5355\u4f4dbyte\uff09Jul1414:14\uff08\u6700\u540e\u4e00\u6b21\u66f4\u6539\u65f6\u95f4\uff092.txt\uff08\u6587\u4ef6\u540d\uff09<\/p>\n

drwx------.\uff08\u6587\u4ef6\u5c5e\u6027\uff097\uff08\u76ee\u5f55\u4e2d\u7684\u5b50\u76ee\u5f55\u6570\uff1a\u6b64\u5904\u89c1\u5230\u7684\u503c\u8981\u51cf2\u624d\u7b49\u4e8e\u8be5\u76ee\u5f55\u4e0b\u7684\u5b50\u76ee\u5f55\u7684\u5b9e\u9645\u4e2a\u6570\u3002\uff09root\uff08\u6240\u5c5e\u8005\uff09root\uff08\u6240\u5c5e\u7ec4\uff094096\uff08\u6587\u4ef6\u5927\u5c0f\uff1a\u5355\u4f4dbyte\uff09Jul1316:56\uff08\u6700\u540e\u4e00\u6b21\u66f4\u6539\u65f6\u95f4\uff09vmware-tools-distrib\uff08\u76ee\u5f55\u540d\uff09<\/p>\n

[root@f\u00faDesktop]#ls-ld\/root\/Desktop\/<\/p>\n

drwxr-xr-x.3rootroot4096Jul1414:44\/root\/Desktop\/<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6587\u4ef6\u5c5e\u6027\u89e3\u91ca\uff1a<\/p>\n

-rw-r--r--.<\/p>\n

drwxr-xr-x.<\/p>\n

\u6570\u7ec41\uff1a\u6587\u4ef6\u7c7b\u578b\u3010-\u666e\u901a\u6587\u4ef6d\u76ee\u5f55l\u7b26\u53f7\u94fe\u63a5b\u5757\u8bbe\u5907\u3011<\/p>\n

\u6570\u7ec42\uff1a\u6587\u4ef6\u6240\u6709\u8005\u5bf9\u8be5\u6587\u4ef6\u7684\u6743\u9650<\/p>\n

\u6570\u7ec43\uff1a\u6587\u4ef6\u6240\u5c5e\u7ec4\u7684\u6743\u9650<\/p>\n

\u6570\u7ec44\uff1a\u5176\u4ed6\u7528\u6237\u7684\u6743\u9650\uff08\u65e2\u4e0d\u662f\u6587\u4ef6\u6240\u6709\u8005\u4e5f\u4e0d\u662f\u6587\u4ef6\u6240\u5c5e\u7ec4\u7684\u7528\u6237\uff09<\/p>\n

\u6570\u7ec45\uff1a\u8868\u793a\u6587\u4ef6\u53d7selinux\u7684\u7a0b\u5e8f\u7ba1\u7406<\/p>\n

8\u8865\u7801\u8d4b\u6743\u6cd5\uff1ar\u3010100\u30114\uff1bw\u3010010\u30112\uff1bx\u3010001\u30111<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u4e09\u3001\u7528\u6237\u4ee5\u53ca\u6743\u9650\u7ba1\u7406\u547d\u4ee4\u6c47\u603b\uff1a<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u7528\u6237\u589e\u5220\u6539\u547d\u4ee4<\/p>\n

useradd<\/p>\n

userdel<\/p>\n

usermod<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u7528\u6237\u7ec4\u589e\u5220\u6539\u547d\u4ee4<\/p>\n

groupadd<\/p>\n

groupdel<\/p>\n

groupmod<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

passwd<\/p>\n

change<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6587\u4ef6\u6743\u9650\u66f4\u6539:chmod\u547d\u4ee4<\/p>\n

chmod\u5bf9\u8c61\u7b97\u6570\u8fd0\u7b97\u7b26\u6743\u9650\u6587\u4ef6<\/p>\n

\u5bf9\u8c61\uff1au\uff08\u6240\u5c5e\u8005\uff09g\uff08\u6240\u5c5e\u7ec4\uff09o\uff08\u5176\u4ed6\u7528\u6237\u7684\u6743\u9650\uff09a\uff08all\uff09<\/p>\n

\u7b97\u6570\u8fd0\u7b97\u7b26\uff1a-+=<\/p>\n

\u6743\u9650\uff1arwx<\/p>\n

[root@f\u00fatmp]#ls-ldming<\/p>\n

drwxr-xr-x.2rootroot4096Jul1610:27ming<\/p>\n

[root@f\u00fatmp]#chmodo-xming<\/p>\n

[root@f\u00fatmp]#ls-ldming<\/p>\n

drwxr-xr--.2rootroot4096Jul1610:27ming<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6587\u4ef6\u6240\u5c5e\u8005\u66f4\u6539\uff1a<\/p>\n

chown\u7528\u6237\u6587\u4ef6<\/p>\n

[root@f\u00fatmp]#chownmingming<\/p>\n

[root@f\u00fatmp]#ls-ldming<\/p>\n

drwxr-xr--.2mingroot4096Jul1610:27ming<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u6587\u4ef6\u6240\u5c5e\u7ec4\u66f4\u6539\uff1a<\/p>\n

chgrp\u7ec4\u6587\u4ef6<\/p>\n

[root@f\u00fatmp]#chgrpmingming<\/p>\n

[root@f\u00fatmp]#ls-ldming<\/p>\n

drwxr-xr--.2mingming4096Jul1610:27ming<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

8\u8865\u7801\u8d4b\u6743\u6cd5<\/p>\n

[root@f\u00fa~]#chmod644\/tmp\/ming<\/p>\n

[root@f\u00fa~]#ls-ld\/tmp\/ming<\/p>\n

drw-r--r--.2mingming4096Jul1610:27\/tmp\/ming<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

linux\u4e0b\u547d\u4ee4\u201cll\u201d\u662f\u201cls-l\"\u7684\u522b\u79f0\u3002<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

\u7c98\u6ede\u4f4d\uff1a\u8d4b\u6743\u540e\u7684\u6587\u4ef6\u53ea\u6709\u6784\u5efa\u8005\u53ef\u4ee5\u5220\u6389<\/p>\n

chmodo+t\u6587\u4ef6<\/p>\n

[root@f\u00fa~]#chmodo+t\/tmp\/ming<\/p>\n

[root@f\u00fa~]#ll-d\/tmp\/ming<\/p>\n

drw-r--r-T.2mingming4096Jul1610:27\/tmp\/ming<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

sgid\uff1a\u8d4b\u6743\u540e\u7684\u76ee\u5f55\uff0c\u65b0\u6784\u5efa\u7684\u6587\u4ef6\u6216\u5219\u5b50\u76ee\u5f55\u7684\u6240\u5c5e\u7ec4\u627f\u7ee7\u7236\u76ee\u5f55\u7684\u6240\u5c5e\u7ec4<\/p>\n

chmodg+s\u76ee\u5f55<\/p>\n

[root@f\u00faming]#chmodg+s\/tmp\/ming<\/p>\n

[root@f\u00fatmp]#ll<\/p>\n

drw-r-Sr-T.2mingming4096Jul1611:29ming<\/p>\n

[root@f\u00faming]#touch20.txt<\/p>\n

[root@f\u00faming]#ll<\/p>\n

-rw-r--r--.1rootming0Jul1611:3320.txt<\/p>\n

[root@f\u00faming]#mkdir60<\/p>\n

[root@f\u00faming]#ll<\/p>\n

drwxr-sr-x.2rootming4096Jul1611:3460<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

suid\uff1a\u51c6\u8bb8\u8c01\u8fd0\u884c\u8be5\u6587\u4ef6\u5177\u6709\u8be5\u6587\u4ef6\u6240\u5c5e\u8005\u7684\u6743\u9650<\/p>\n

chmodu+s\u6587\u4ef6<\/p>\n

[root@f\u00faDesktop]#ll\/usr\/bin\/vim<\/p>\n

-rwxr-xr-x.1rootroot2324712Dec222016\/usr\/bin\/vim<\/p>\n

[root@f\u00faDesktop]#chmodu+s\/usr\/bin\/vim<\/p>\n

[root@f\u00faDesktop]#ll\/usr\/bin\/vim<\/p>\n

-rwsr-xr-x.1rootroot2324712Dec222016\/usr\/bin\/vim<\/p>\n

\u5907\u6ce8\uff1alinux\u7ea2\u5e95\u9ec4\u5b57\u4ee3\u8868\u8b66\u544a\uff01<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

[root@f\u00faDesktop]#echo$PATH<\/p>\n

\/usr\/lib64\/qt-3.3\/bin:\/usr\/local\/sbin:\/usr\/sbin:\/sbin:\/usr\/local\/bin:\/usr\/bin:\/bin:\/root\/bin<\/p>\n

suid\uff1a4sgid\uff1a2\u7c98\u6ede\u4f4d\uff1a1<\/p>\n

[root@f\u00faDesktop]#find\/usr\/bin-perm4755<\/p>\n

\/usr\/bin\/at<\/p>\n

\/usr\/bin\/chage<\/p>\n

\/usr\/bin\/pkexec<\/p>\n

\/usr\/bin\/Xorg<\/p>\n

\/usr\/bin\/crontab<\/p>\n

\/usr\/bin\/newgrp<\/p>\n

\/usr\/bin\/vim<\/p>\n

\/usr\/bin\/gpasswd<\/p>\n

\/usr\/bin\/passwd<\/p>\n

\/usr\/bin\/ksu<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

1\u3001\u4e0d\u518d\u5bb9\u8bb8\u6dfb\u52a0\u65b0\u7528\u6237\u7684\u6073\u6c42<\/p>\n

chattr\u547d\u4ee4\uff1a\u7528\u4e8e\u6539\u53d8\u6587\u4ef6\u5c5e\u6027<\/p>\n

chattr+i\u6587\u4ef6<\/p>\n

lsttr\u547d\u4ee4\uff1a\u67e5\u770b\u6587\u4ef6\u5c5e\u6027<\/p>\n

lsattr\u6587\u4ef6<\/p>\n

[root@f\u00faDesktop]#lsattr\/etc\/passwd\/etc\/shadow<\/p>\n

-------------e-\/etc\/passwd<\/p>\n

-------------e-\/etc\/shadow<\/p>\n

[root@f\u00faDesktop]#chattr+i\/etc\/passwd\/etc\/shadow<\/p>\n

[root@f\u00faDesktop]#lsattr\/etc\/passwd\/etc\/shadow<\/p>\n

----i--------e-\/etc\/passwd<\/p>\n

----i--------e-\/etc\/shadow<\/p>\n

[root@f\u00faDesktop]#useraddkk<\/p>\n

useradd:cannotopen\/etc\/passwd<\/p>\n

2\u3001umask<\/p>\n

root\u7528\u6237\u7684umask\u9ed8\u8ba4\u503c\u662f0022\uff0c\u901a\u5e38\u7528\u6237\u9ed8\u8ba4\u662f0002<\/p>\n

\u76ee\u5f55\u7684\u6700\u9ad8\u6743\u96500777-0022=0755<\/p>\n

\u6587\u4ef6\u7684\u6700\u9ad8\u6743\u96500666-0022=644<\/p>\n

\u901a\u5e38\u670d\u52a1\u5668\u914d\u7f6eumask\u7684\u503c\u914d\u7f6e\u4e3a027\u6700\u597d\uff1b\u987b\u8981\u53bb\u66f4\u6539\u4e24\u5904\u6587\u4ef6\u4e2d\u7684umask\u503c\u3002<\/p>\n

\/etc\/profile<\/p>\n

\/etc\/bashrc<\/p>\n

3\u3001\u4fee\u6539\u9ed8\u8ba4\u7684\u5bc6\u7801\u6700\u957f\u6709\u6548\u671f\uff1a\u66f4\u6539\u4ee5\u4e0b\u914d\u7f6e\u6587\u4ef6<\/p>\n

\/etc\/login.defs<\/p>\n","protected":false},"excerpt":{"rendered":"

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