Diskless Remote Boot in Linux

DRBL management
Massively create user accounts


Massively create user accounts

You can use any account tool to add or del user accounts, since DRBL uses NIS/YP, therefor you have to run "make -C /var/yp all" after you create or remove accounts. One the other hand, two commands are available in DRBL, "drbl-useradd" and "drbl-userdel" are used to massively add or remove user accounts. drbl-useradd is used to add user accounts, and the syntax:

# drbl-useradd [-s|--single] username group Create an account, for examples, to new an user "drbl" with group "penguin"
    drbl-useradd -s drbl penguin
# drbl-useradd [-r|--range] prefix start end groupname [password_opt] Create (<end> - <start> + 1) users, username start with <prefix><start> to <prefix><end>, group name is "groupname".
password_opt details see this
Created accounts are in file "username_pw.txt".
For example, to create accounts: cpc001 to cpc040 with group name "g3c5", and it's password is randomly generated with length 7. Run like this:
    drbl-useradd -r cpc 1 40 g3c5 7
PS. In this command, we only create accounts with maximun digits length "3", i.e. 001 to 999.
# drbl-useradd [-f|--file] filename Read the account setting from file "filename"; This is an extention of the above option "--range". For example, if you want to create accounts s89101 ~ s89129 and tckps01 ~ tckps99, you can have a file "account.txt" first, which says:
    # account for student
    s           89101   89129 g3c6 7
    # account for teacher
    tckps       01      99 teacher neverforget
Then run"drbl-useradd -f account.txt",
Created accounts are in file "username_pw.txt".
# drbl-useradd [-l|--list] filename Another option to massively create accounts from file "filename". but in this file, it describes the accounts line by line. The syntax for every line is
id groupname password_opt
password_opt details see this.
For example, to have 5 new accounts, say they are "blake, steven, julian, kos, kevin", the group is "goodman" or "wiseman", and their passwords are assigned separately.
Then have a file "accountlist.txt" first, and its content:
    # account for group "goodman" 
    blake goodman ilovepinwife
    steven goodman ilovesteven
    julian goodman ilovemac
    kevin goodman 6
    # account for group "wiseman" 
    kos wiseman 9
Then run "drbl-useradd -l accountlist.txt",
Created accounts are in file "username_pw.txt".