Linux system network service (2 risultati)

Soft cover. Condizione: New. Language:Chinese.Author:BEN SHE.YI MING.Binding:Soft cover.Publisher:Electronic Industry Press.

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Please note that the content of this book primarily consists of articlesavailable from Wikipedia or other free sources online. Unix-likeoperating systems identify users within the kernel by an unsignedinteger value called a user identifier, often abbreviated to UID or UserID. The range of UID values varies amongst different systems; at thevery least, a UID represents a 15-bit integer, ranging between 0 and32767, with the following restrictions:The superuser must always have aUID of zero (0). The user 'nobody' traditionally got the largestpossible UID (as the opposite of the superuser): 32767. More recentlysystems have assigned the user a UID in the system range (1-100, seebelow) or in the range 65530-65535.Convention reserves UIDs from 1 to100 for system use; some manuals recommend reserving UIDs from 101 up to499 (Red Hat Enterprise Linux) or even up to 999 (Debian) as well.TheUID value references users in the /etc/passwd file. Shadow passwordfiles and Network Information Service also refer to numeric UIDs. Theuser identifier has become a necessary component of Unix file systemsand processes.…