chmod e umask

• chmod 777 is the same as umask=000 (or rwx)
• chmod 666 is the same as umask=111 (or rw-)
• chmod 555 is the same as umask=222 (or r-x)
• chmod 444 is the same as umask=333 (or r--)
• chmod 333 is the same as umask=444 (or -wx)
• chmod 222 is the same as umask=555 (or -w-)
• chmod 111 is the same as umask=666 (or --x)
• chmod 000 is the same as umask=777 (or ---)