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  1. How-To Geek
    https://www.howtogeek.com/812961/umask-linux

    What Is umask in Linux, and How Do You Use It?

    • Subtracting the mask value from the default permissions gives you the actual permissions. In other words, if a permission is set in the umask value it will not be set in the permissions applied to the directory or … See more

    Access Permissions

    All directories and files have flags called mode bits that decide whether they can be read, written to, or executed. Executing a file means running it like a program or … See more

    How-To Geek
    The Mode Bits

    You can see the permissions for files by using the lscommand and the (long format) option. We'll also look at a directory by adding the -d (directory) option. Without this option, lsw… See more

    How-To Geek
    The Default Permissions and umask

    The default permissions for a directory are 777, and the default permissions for a file are 666. That gives every user full access to all directories, and the ability to read and write any fil… See more

    How-To Geek
    The umask Value

    The umask value is set globally with one value for root and a different one for all other users. But it can be set to a new value for anyone. To see what the current umask setti… See more

    How-To Geek
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    Table of Contents
    Access Permissions
    The Mode Bits
    The Default Permissions and umask
    The umask Value
    How do I set up umask?
     

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    Upvotes15edited Jul 15, 2013 at 7:06

    The umask is typically set system wide through the config file: /etc/login.defs:

    $ grep UMASK /etc/login.defs
    UMASK 077

    This value can be overridden but typically is not through either /etc/bashrc, /etc/profile and/or by the users in their $HOME/.bashrc (Assuming they're using Bash).

    If you grep for "umask" in those aforementioned files you'll also notice this on RHEL boxes:

    $ grep umask /etc/bashrc /etc/profile
    /etc/bashrc: # By default, we want umask to get set. This sets it for non-login shell.
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  3. Baeldung
    https://www.baeldung.com/linux/check-umask-all-users

    How to Check Umask for All Users in Linux | Baeldung on Linux

     
  4. Linuxize
    https://linuxize.com/post/umask-comm…

    Umask Command in Linux | Linuxize

    WEBFeb 23, 2021 — The umask utility allows you to view or to set the file mode creation mask, which determines the permissions bits for newly created files or directories. It is used by mkdir, touch, tee , and other commands …

  5. GeeksForGeeks
    https://www.geeksforgeeks.org/umask-command-in...

    Umask command in Linux with examples - GeeksforGeeks

  6. Unix & Linux Stack Exchange
    https://unix.stackexchange.com/questions/82638

    How to check umask for all users under Linux?

  7. nixCraft
    https://www.cyberciti.biz/tips/understan…

    What is Umask and How To Setup Default umask …

    WEBMay 11, 2024 — Use the umask command to set default file permissions on Linux and Unix-like machines. Finding the current shell’s umask value. The umask command without any arguments will display the current value of …

  8. People also ask
    How to check umask value in Linux?On most of the Linux distributions, the default system-wide value is set in pam_umask.so or in /etc/profile file. By adding the value in ~/.bashrc file in the user’s home directory, we can make a umask value specific for the user. To check umask value, execute umask command. Output: We can ignore the very first 0 from above four numbers for now.

    What is umask in Linux? - HowtoForge

    howtoforge.com
    What is a umask in Linux?Yet, as we saw earlier, the final permissions of the file are different. In Linux, a umask is a way to reduce the permissions new files have. In particular, to get the default permissions for newly created files, we OR the base mode (default usually 0666) with the current umask value as returned by the umask command:

    What Is a umask and How to Set It System-Wide? - Baeldung

    baeldung.com
    How do I set up umask?You can set up umask in /etc/bashrc or /etc/profile file for all users. By default most Linux distro set it to 0022 (022) or 0002 (002). Edit the ~/.bashrc file in your HOME directory to override the system defaults: Save and close the file when using vim/vi as a text editor by pressing the ESC + x. Changes will take effect after next login.

    What is Umask and How To Setup Default umask Under Linux?

    cyberciti.biz
    What is umask value?The umask value contains the permission bits that will NOT be set on the newly created files and directories. As we have already mentioned, the default creation permissions for files are 666 and for directories 777. To calculate the permission bits of the new files, subtract the umask value from the default value.

    Umask Command in Linux | Linuxize

    linuxize.com
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  9. phoenixNAP
    https://phoenixnap.com/kb/what-is-umask

    How to Set and Update the Default Umask Value - phoenixNAP

  10. Ask Ubuntu
    https://askubuntu.com/questions/44542

    What is "umask" and how does it work? - Ask Ubuntu

  11. Baeldung
    https://www.baeldung.com/linux/umask

    What Is a umask and How to Set It System-Wide? - Baeldung

  12. RedSwitches
    https://www.redswitches.com/blog/what-is-umask-in-linux

    How To Use umask To Manage File Permissions in Linux

  13. New Generation Enterprise Linux
    https://ngelinux.com/rhel-or-centos-what-is-umask...

    RHEL or Centos: What is umask in linux and how to set/change it

  14. Linuxaria
    https://linuxaria.com/article/linux-shell...

    Linux shell: understanding Umask with examples - Linuxaria

  15. HowtoForge
    https://www.howtoforge.com/linux-umask

    What is umask in Linux? - HowtoForge

  16. Liquid Web
    https://www.liquidweb.com/blog/what-is-umask-and...

    What Is Umask? How to Use it Effectively - Liquid Web

  17. Red Hat Customer Portal
    https://access.redhat.com/articles/1743

    What is umask and how is it determined on a Linux system?

  18. Unix & Linux Stack Exchange
    https://unix.stackexchange.com/questions/651063/...

    How do I find the umask value for a given system user?

  19. IBM
    https://www.ibm.com/docs/en/aix/7.2?topic=u-umask-command

    umask Command - IBM

  20. man7.org
    https://www.man7.org/linux/man-pages/man2/umask.2.html

    umask(2) — Linux manual page - man7.org

  21. Ask Ubuntu
    https://askubuntu.com/questions/44534

    How to set umask for a specific folder - Ask Ubuntu

  22. Stack Overflow
    https://stackoverflow.com/questions/165212

    linux: getting umask of an already running process?

    How to get the current umask value from Java?
    python - Reading umask (thread-safe)
    See more results
  23. DigitalOcean
    https://www.digitalocean.com/community/questions/...

    What is umask? How to set it permanently for a user?

    Setting server-wide Umask for directories ...Apr 3, 2017
    Set umask for another user | DigitalOceanOct 25, 2016
    See more results
  24. Stack Overflow
    https://stackoverflow.com/questions/26635286

    How to find out where a umask is getting set for a user?

  25. Unix & Linux Stack Exchange
    https://unix.stackexchange.com/questions/258284

    Current umask of a process with <pid> - Unix & Linux Stack …

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