How To Set Umask For a File In Linux?

1. Change the umask in your shell configuration file The easiest way to set a umask is to add the command to a shell configuration file. The most popular shell, bash, is the default on many Linux distributions. If you are using bash, you can set a umask by adding a line to the ~/.bashrc file in your home directory. This file is read and executed when you start a new session in bash, so the umask will be applied each time you log in or open a new terminal window. To add a umask to your bash configuration, open the file in a text editor (like nano) and add the following line at the end:

umask 027

This will set the umask to 027, which is a common setting for files and directories. You can change the number to whatever you want.

2. Set the umask with chmod You can also set the umask for a single file or directory by using the chmod command. For example, to set the umask for a single file, you can use the following command:

chmod 027 file.txt

This will set the umask of the file.txt file to 027. You can also use this command to set the umask for multiple files.

For example, to set the umask for all files in the current directory, you can use a wildcard like this: