{"id":9181,"date":"2021-08-13T11:21:27","date_gmt":"2021-08-13T11:21:27","guid":{"rendered":"https:\/\/linuxways.net\/?p=9181"},"modified":"2021-08-13T11:21:27","modified_gmt":"2021-08-13T11:21:27","slug":"umask-command-in-linux","status":"publish","type":"post","link":"https:\/\/linuxways.net\/de\/centos\/umask-command-in-linux\/","title":{"rendered":"Umask Command in Linux"},"content":{"rendered":"

Introduction<\/h2>\n

UMASK in a Linux system stands for User Mask. It is the default permission of a file or directory when they are created in your Linux machine.<\/p>\n

Most Linux distros have a default value of UMASK is 022.<\/p>\n

This article will show you the detail of the UMASK and the way to use it.<\/p>\n

Calculate the value of UMASK<\/h2>\n

The minimum and maximum values of umask for a directory are 000 and 777 respectively. The minimum and maximum values of umask for a file are 000 and 666 respectively. The following table describes some of the common values:<\/p>\n\n\n\n
0<\/p>\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

5<\/p>\n

6<\/p>\n

7<\/th>\n

Read, Write & Execute<\/p>\n

Read & Write<\/p>\n

Read & Execute<\/p>\n

Read Only<\/p>\n

Write & Execute<\/p>\n

Write Only<\/p>\n

Execute Only<\/p>\n

No Permissions<\/th>\n<\/tr>\n<\/thead>\n<\/table>\n

To get a better understanding of how to use UMASK in Linux, let\u2019s analyze the following example:<\/p>\n

If the value of umask is 077, it means:<\/p>\n

0 – the Owner has Read, Write and Execute permission<\/p>\n

7 – the Group has no Permissions<\/p>\n

7 – Others have no Permissions<\/p>\n

$ umask 077<\/pre>\n
$ mkdir new-folder<\/pre>\n
$ touch new-file<\/pre>\n
$ ls -ld new-folder new-file<\/pre>\n
<\/p>\n
Get the current umask value<\/h2>\n
You can get the current value of umask by simply running the command:<\/p>\n
$ umask<\/pre>\n
<\/p>\n
Another way to set the umask value<\/h2>\n
Besides the method of using numeric value for umask, you can configure the umask by alphabetic value as:<\/p>\n
r – Read<\/p>\n
w – Write<\/p>\n
x – Execute<\/p>\n
u – User ownership<\/p>\n
g – Group ownership<\/p>\n
o – other ownership<\/p>\n
For instance:<\/p>\n
$ umask u=rw<\/pre>\n
$ mkdir test-folder<\/pre>\n
$ touch file-test<\/pre>\n
$ ls -ld test-folder file-test<\/pre>\n
<\/p>\n
Conclusion<\/h2>\n
You\u2019ve already gone through the details of how to use UMASK in the Linux system.<\/p>\n
Thanks for reading. If you have any concerns, feel free to leave your comment and let me know.<\/p>","protected":false},"excerpt":{"rendered":"
Introduction UMASK in a Linux system stands for User Mask. It is the default permission of a file or directory when they are created in your Linux machine.…<\/p>","protected":false},"author":1,"featured_media":9277,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,4,5,83,165,2],"tags":[477],"class_list":["post-9181","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-centos","category-debian","category-mint","category-opensuse","category-red-hat","category-ubuntu","tag-umask-command"],"_links":{"self":[{"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/posts\/9181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/comments?post=9181"}],"version-history":[{"count":0,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/posts\/9181\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/media\/9277"}],"wp:attachment":[{"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/media?parent=9181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/categories?post=9181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/linuxways.net\/de\/wp-json\/wp\/v2\/tags?post=9181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}