useraddis native binary compiled with the system. But,
a perl script which uses
useraddbinary in back-end.
adduseris more user friendly and interactive than its back-end
useradd. There’s no difference in features provided.
Source: What’s the difference between “adduser” and “useradd”?
deluser when deleting users) when you’re creating new users from the command line. (If you’re writing a script, especially if you aim for portability, you might want to use the lowlevel utilities instead – and
deluser might not be available on all distros, e.g. on SuSE.)
usermod commands are lowlevel utilities which are there for historical reasons, while
adduser/deluser Do The Right Thing™. (I remember which to use by thinking that
user* comes after
adduser/deluser in the alphabet, and therefore is “worse”.)
According to the respective manpages (on Ubuntu 12.04 Precise Pangolin, i.e. a Debian derivative system).
addgroupadd users and groups to the system according to command line
options and configuration information in
/etc/adduser.conf. They are friendlier
front ends to the low level tools like
by default choosing Debian policy conformant UID and GID values, creating a home
directory with skeletal configuration, running a custom script, and other features.
addgroupcan be run in one of five modes:
useraddis a low level utility for adding users. On Debian, administrators should
See also: What’s the difference between “adduser” and “useradd”? (on SuperUser)
adduser: add user with full profile and info (pass, quota, permission, etc.)
useradd: add user with his name only (if you want to add a temp user with only a name,other info not required)