displayed or set using the sysctl(8) utility. umask [ mask ] Set the value of umask ... getopt(3) , passwd(5) , environ(7) , sysctl(8) HISTORY dash is a POSIX-compliant implementat…displayed or set using the sysctl(8) utility. umask [ mask ] Set the value of umask ... getopt(3) , passwd(5) , environ(7) , sysctl(8) HISTORY dash is a POSIX-compliant implementat…