print umask

umask -S
u=rwx,g=rwx,o=rx

umask -p
umask 0002

default rights when a file is created are:

• file: 0666
• folder : O777

The calculated rights for new files are the default rights - the umask: 0666-0002=0664

touch umasktest
ls -l umasktest 
-rw-rw-r-- 1 ordinateur ordinateur 0 avril 21 14:30 umasktest

modify umask

umask 0022