umask
The umask command is used to set the default file permissions for newly created files and directories. The term umask stands for user file-creation mode mask. It is a permission mask that determines which permission bits are turned off by default when a new file or directory is created. The umask value is subtracted from the maximum permissions (usually represented as 666 for files and 777 for directories) to derive the effective permissions. This change reflects the more accurate terminology for the permissions being modified by the umask value.
The importance of the umask command lies in enhancing security and controlling file permissions in a multi-user environment. By setting the appropriate umask value, system administrators can ensure that new files and directories have the desired permissions. This helps in enforcing security policies, preventing unauthorized access, and maintaining the integrity of sensitive data.
The umask command is particularly useful in scenarios...
