M

mail aliases

not using user login names forUser (Login) Names

MAIL environment variableShell and Environment Variable Descriptions

MANPATH environment variable

MANPATH Environment Variable

Shell and Environment Variable Descriptions

maximums

secondary groups users can belong toUNIX Groups

user ID numberUser ID Numbers

user login name lengthGuidelines for Assigning User Names, User IDs, and Group IDs

minimums

user login name lengthGuidelines for Assigning User Names, User IDs, and Group IDs

mounting

user home directories

Manually Mounting a User's Home Directory

User's Work Environment