umask\u503c\u7528\u4e8e\u8bbe\u7f6e\u7528\u6237\u5728\u521b\u5efa\u6587\u4ef6\u65f6\u7684\u9ed8\u8ba4\u6743\u9650\uff0c\u5f53\u6211\u4eec\u5728\u7cfb\u7edf\u4e2d\u521b\u5efa\u76ee\u5f55\u6216\u6587\u4ef6\u65f6\uff0c\u76ee\u5f55\u6216\u6587\u4ef6\u6240\u5177\u6709\u7684\u9ed8\u8ba4\u6743\u9650\u5c31\u662f\u7531umask\u503c\u51b3\u5b9a\u7684\u3002<\/p>\n\n\n\n
\u5bf9\u4e8eroot\u7528\u6237\uff0c\u7cfb\u7edf\u9ed8\u8ba4\u7684umask\u503c\u662f0022\uff1b\u5bf9\u4e8e\u666e\u901a\u7528\u6237\uff0c\u7cfb\u7edf\u9ed8\u8ba4\u7684umask\u503c\u662f0002\u3002\u6267\u884cumask\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u7528\u6237\u7684umask\u503c\u3002<\/p>\n\n\n\n
pi@raspberrypi:~ $ umask\n0022\npi@raspberrypi:~ $ <\/pre>\n\n\n\n<\/p>\n\n\n\n
umask\u503c\u4e00\u5171\u67094\u7ec4\u6570\u5b57Nnnn\uff0c\u5176\u4e2d\u7b2c1\u7ec4\u6570\u5b57N\u7528\u4e8e\u5b9a\u4e49\u7279\u6b8a\u6743\u9650\uff0c\u6211\u4eec\u4e00\u822c\u4e0d\u4e88\u8003\u8651\uff0c\u4e0e\u4e00\u822c\u6743\u9650\u6709\u5173\u7684\u662f\u540e3\u7ec4\u6570\u5b57nnn\u3002<\/p>\n\n\n\n
\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u76ee\u5f55\uff0c\u7528\u6237\u6240\u80fd\u62e5\u6709\u7684\u6700\u5927\u6743\u9650\u662f777\uff1b\u5bf9\u4e8e\u6587\u4ef6\uff0c\u7528\u6237\u6240\u80fd\u62e5\u6709\u7684\u6700\u5927\u6743\u9650\u662f\u76ee\u5f55\u7684\u6700\u5927\u6743\u9650\u53bb\u6389\u6267\u884c\u6743\u9650\uff0c\u5373666\u3002\u56e0\u4e3ax\u6267\u884c\u6743\u9650\u5bf9\u4e8e\u76ee\u5f55\u662f\u5fc5\u987b\u7684\uff0c\u6ca1\u6709\u6267\u884c\u6743\u9650\u5c31\u65e0\u6cd5\u8fdb\u5165\u76ee\u5f55\uff0c\u800c\u5bf9\u4e8e\u6587\u4ef6\u5219\u4e0d\u5fc5\u9ed8\u8ba4\u8d4b\u4e88x\u6267\u884c\u6743\u9650\u3002<\/p>\n\n\n\n
\u5bf9\u4e8eroot\u7528\u6237\uff0c\u4ed6\u7684umask\u503c\u662f022\u3002\u5f53root\u7528\u6237\u521b\u5efa\u76ee\u5f55\u65f6\uff0c\u9ed8\u8ba4\u7684\u6743\u9650\u5c31\u662f\u7528\u6700\u5927\u6743\u9650777\u53bb\u6389\u76f8\u5e94\u4f4d\u7f6e\u7684umask\u503c\u6743\u9650\uff0c\u5373\u5bf9\u4e8e\u6240\u6709\u8005\u4e0d\u5fc5\u53bb\u6389\u4efb\u4f55\u6743\u9650\uff0c\u5bf9\u4e8e\u6240\u5c5e\u7ec4\u8981\u53bb\u6389w\u6743\u9650\uff0c\u5bf9\u4e8e\u5176\u4ed6\u7528\u6237\u4e5f\u8981\u53bb\u6389w\u6743\u9650\uff0c\u6240\u4ee5\u76ee\u5f55\u7684\u9ed8\u8ba4\u6743\u9650\u5c31\u662f755\uff1b\u5f53root\u7528\u6237\u521b\u5efa\u6587\u4ef6\u65f6\uff0c\u9ed8\u8ba4\u7684\u6743\u9650\u5219\u662f\u7528\u6700\u5927\u6743\u9650666\u53bb\u6389\u76f8\u5e94\u4f4d\u7f6e\u7684umask\u503c\uff0c\u5373\u6587\u4ef6\u7684\u9ed8\u8ba4\u6743\u9650\u662f644\u3002<\/p>\n\n\n\n
\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u6d4b\u8bd5\u64cd\u4f5c\u6765\u4e86\u89e3umask\u503c\u3002<\/p>\n\n\n\n
[root@localhost ~]# mkdir directory1 #\u521b\u5efa\u6d4b\u8bd5\u76ee\u5f55<\/p>\n\n\n\n
[root@localhost ~]# ll -d directory1 #\u76ee\u5f55\u7684\u9ed8\u8ba4\u6743\u9650\u662f755<\/p>\n\n\n\n
drwxr-xr-x. 2 root root 4096 12\u6708 2 13:08 directory1<\/p>\n\n\n\n
[root@localhost ~]# touch file1 #\u521b\u5efa\u6d4b\u8bd5\u6587\u4ef6<\/p>\n\n\n\n
[root@localhost ~]# ll file1 #\u6587\u4ef6\u7684\u9ed8\u8ba4\u6743\u9650\u662f644<\/p>\n\n\n\n
-rw-r–r–. 1 root root 0 12\u6708 2 13:09 file1<\/p>\n\n\n\n
\u901a\u8fc7umask\u547d\u4ee4\u53ef\u4ee5\u4fee\u6539umask\u503c\uff0c\u6bd4\u5982\u5c06umask\u503c\u8bbe\u4e3a0077\u3002<\/p>\n\n\n\n
[root@localhost ~]# umask 0077<\/p>\n\n\n\n
[root@localhost ~]# umask<\/p>\n\n\n\n
0077<\/p>\n\n\n\n
\u6b64\u65f6\u521b\u5efa\u7684\u76ee\u5f55\u9ed8\u8ba4\u6743\u9650\u4e3a700\uff0c\u6587\u4ef6\u9ed8\u8ba4\u6743\u9650\u662f600\uff1a<\/p>\n\n\n\n
[root@localhost ~]# mkdir directory2<\/p>\n\n\n\n
[root@localhost ~]# ll -d directory2<\/p>\n\n\n\n
drwx——. 2 root root 4096 12\u6708 2 13:14 directory2<\/p>\n\n\n\n
[root@localhost ~]# touch file2<\/p>\n\n\n\n
[root@localhost ~]# ll file2<\/p>\n\n\n\n
-rw——-. 1 root root 0 12\u6708 2 13:14 file2<\/p>\n\n\n\n
\u8003\u8651\u4e00\u4e0b\uff0c\u5982\u679c\u5c06umask\u503c\u8bbe\u4e3a0003\uff0c\u90a3\u4e48\u6b64\u65f6\u521b\u5efa\u7684\u76ee\u5f55\u6216\u6587\u4ef6\u7684\u9ed8\u8ba4\u6743\u9650\u662f\u591a\u5c11\uff1f<\/p>\n\n\n\n
\u6b63\u786e\u7684\u7ed3\u679c\u5e94\u8be5\u662f\uff1a\u76ee\u5f55\u7684\u9ed8\u8ba4\u6743\u9650\u662f774\uff0c\u6587\u4ef6\u7684\u9ed8\u8ba4\u6743\u9650\u662f664\u3002\u5728\u8ba1\u7b97\u9ed8\u8ba4\u6743\u9650\u65f6\uff0c\u4e0d\u5e94\u7528\u6700\u5927\u6743\u9650\u76f4\u63a5\u51cf\u53bbumask\u503c\uff0c\u800c\u662f\u5c06umask\u503c\u6240\u5bf9\u5e94\u7684\u76f8\u5e94\u4f4d\u7f6e\u7684\u6743\u9650\u53bb\u6389\uff0c\u8fd9\u6837\u624d\u80fd\u5f97\u5230\u6b63\u786e\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n
umask\u547d\u4ee4\u53ea\u80fd\u4e34\u65f6\u4fee\u6539umask\u503c\uff0c\u7cfb\u7edf\u91cd\u542f\u4e4b\u540eumask\u5c06\u8fd8\u539f\u6210\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u8981\u6c38\u4e45\u4fee\u6539umask\u503c\uff0c\u9700\u8981\u4fee\u6539\/etc\/profile\u6587\u4ef6\u6216\u662f\u4fee\u6539\/etc\/bashrc\u6587\u4ef6\uff0c\u4f8b\u5982\u8981\u5c06\u9ed8\u8ba4umask\u503c\u8bbe\u7f6e\u4e3a027\uff0c\u90a3\u4e48\u53ef\u4ee5\u5728\u6587\u4ef6\u4e2d\u589e\u52a0\u4e00\u884c\u201cumask 027\u201d\u3002<\/p>\n\n\n\n
\/etc\/profile\u548c\/etc\/bashrc\u90fd\u53ef\u4ee5\u7528\u4e8e\u8bbe\u7f6e\u7528\u6237\u767b\u5f55\u7cfb\u7edf\u65f6\u81ea\u52a8\u6267\u884c\u67d0\u4e9b\u64cd\u4f5c\uff0c\u4ed6\u4eec\u7684\u533a\u522b\u662f\/etc\/profile\u53ea\u5728\u7528\u6237\u7b2c\u4e00\u6b21\u767b\u5f55\u65f6\u88ab\u6267\u884c\uff0c\u800c\/etc\/bashrc\u5219\u5728\u7528\u6237\u6bcf\u6b21\u767b\u5f55\u52a0\u8f7dBash Shell\u65f6\u90fd\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n
\u56e0\u800c\uff0c\u5982\u679c\u662f\u4fee\u6539\/etc\/profile\u6587\u4ef6\uff0c\u5c06\u53ea\u5bf9\u65b0\u521b\u5efa\u7684\u7528\u6237\u751f\u6548\uff1b\u800c\u5982\u679c\u662f\u4fee\u6539\/etc\/bashrc\u6587\u4ef6\uff0c\u5219\u5bf9\u6240\u6709\u7528\u6237\u90fd\u751f\u6548\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
umask\u503c\u7528\u4e8e\u8bbe\u7f6e\u7528\u6237\u5728\u521b\u5efa\u6587\u4ef6\u65f6\u7684\u9ed8\u8ba4\u6743\u9650\uff0c\u5f53 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[253,89],"tags":[201,200,199,198,197,202,131,203,205,204,62],"class_list":["post-1448","post","type-post","status-publish","format-standard","hentry","category-fun","category-live","tag-rwt","tag-200","tag-199","tag-198","tag-197","tag-chmod","tag-linux","tag-usr","tag-205","tag-204","tag-62"],"_links":{"self":[{"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/1448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1448"}],"version-history":[{"count":1,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/1448\/revisions"}],"predecessor-version":[{"id":1449,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/1448\/revisions\/1449"}],"wp:attachment":[{"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zengqq.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}