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15 Cards in this Set

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define: Host
Another word for a computer system
Host Name
a unique name given to a computer system by the system administrator to distinguish it from other hosts on the network. The command <uname –n> displays the assigned host name
IP address (internet address)
a number that represents the host address and the network address, for example 192.134.117.25. A host’s IP address identifies where a host is on the internet, which allows network traffic to be directed to that host. This software address is placed in the /etc/inet/hosts file
Ethernet Address
A host’s unique hardware address. A number displayed as 12 hexadecimal digits. For example, 08:00:20:1C:54:7E. This address is stored in NVRAM (non-volatile random access memory)
Server
A host that provides one of more services to hosts on a network
Client
A host that uses services provided by a server.file server shares files with clients. print server shares printer or printers with clients. application server provides applications to clients
Login name (user name)
must be unique for each user. 2 to 8 characters, first character must be a letter. at least one character must be a lowercase letter. no spaces or underscores
UID
User Identification Number. must be unique. 100 – 60000
GID
Group Identification Number. 100 – 60000
useradd
adds a new user (-u UID)
(-g group)(-G secondary groups)(-d home directory)(-m creates home dir if does not exist)(-s pathname of shell, if not defined defaults to /bin/sh)(-c comment)(-o allows UID to be duplicated)(-e expire date on account)(-f days inactive before account locked)(-k skel dir if other than default of /etc/skel
usermod
modifies a curent users acount. same options as useradd with addition of(-l new user name)(-m moves users home dir to location specified with –d)
userdel
deletes a current user. (-r removes users home directory and all files in it)
groupadd
adds a new group (-g GID)(-o allows GID to be duplicated)
groupmod
modifies an existing group. same options as groupadd with addition of: (-n new group name)
groupdel
deletes an existing group