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Batch editing LDAP passwords


I need to implement a groupware for my organisation. In order to achieve this, I need to test each user login, and make some interaction tests, espacially for free/busy features of the calendar.
The authencation is against an LDAP server.
I need to copy the LDAP server and batch modify the passwords to be all the same in my test environment.
In order to achieve this, I need to list all “dn” and modify the “userPassword” value.

This is done in two steps:

ldapsearch -w 'admin-password' \
           -x -D 'cn=admin,dc=rktmb,dc=org' \
           -b 'ou=Users,dc=rktmb,dc=org' \
           -s one \
           -H ldap://localhost  dn 

To list the users
 
ldapsearch -w 'admin-password' \
           -x -D 'cn=admin,dc=rktmb,dc=org' \
           -b 'ou=Users,dc=rktmb,dc=org' \
           -s one \
           -H ldap://localhost  dn \
    | awk '/^dn: /{print $0"\nchangetype: modify
                            \nreplace: userPassword
                            \nuserPassword:: e3NoYX11MWRucUpaQ\n";}' \
    > modified.ldif

To write it to an output file.
 
ldapmodify -c -w 'admin-password' \
              -x -D "cn=admin,dc=rktmb,dc=org" \
              -H ldap://localhost \
              -f  modified.ldif -S modified.log

To make the changes.

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