What does umask 777 mean?

As you have set the umask to remove the read/write bits for the owner and the read bits for others, a default such as 777 in applications would result in the file permissions being 133 . This would mean that you (and others) could execute the file, and others would be able to write to it.

What does it mean if the umask value is set to 0000?

Setting the umask to 0000 (or just 0 ) means that newly created files or directories created will have no privileges initially revoked. In other words, a umask of zero will cause all files to be created as 0666 or world-writable. Directories created while umask is 0 will be 0777 .

What does umask 0022 mean?

Brief summary of umask value meanings: umask 022 – Assigns permissions so that only you have read/write access for files, and read/write/search for directories you own. All others have read access only to your files, and read/search access to your directories.

What does umask 007 mean?

By default, DataStage uses umask 002 which means new directories will have permission 775 and new files permission of 664. With umask 007, directories will have permission 770 and new files will have permission 660. Any changes to this file will not take effect until the DataStage engine is stopped and restarted.

What is Unix sticky bit?

In computing, the sticky bit is a user ownership access right flag that can be assigned to files and directories on Unix-like systems. Without the sticky bit set, any user with write and execute permissions for the directory can rename or delete contained files, regardless of the file’s owner.

What is a file mask?

A file mask is essentially a pattern of fixed and wildcard characters used to match folder and file names. They provide a flexible means for identification of a specific file or group of files based on their name and extension. Fixed characters – Letters, numbers and other characters allowed in file names.

What is the umask for 775?

With this mask default directory permissions are 775 and default file permissions are 664. The default umask for the root user is 022 result into default directory permissions are 755 and default file permissions are 644.

What umask 0002?

The umask number controls the default permissions of newly created files. The umask is used with any program that creates new files to prevent undesired permissions from being granted. Umask values are usually 0002 or 0022 – restrict write permission by others or group and others.

Why umask is used in Linux?

The user file-creation mode mask (umask) is use to determine the file permission for newly created files. It can be used to control the default file permission for new files. It is a four-digit octal number.

What does chmod 1777 mean?

When the setgid bit is set on a directory all files (or directories) created in that directory will belong to the group that owns the directory. When the sticky bit is set only the owner and root can delete it. The norm for /tmp is 1777.