Update README.md

README.md

@@ -73,6 +73,46 @@ now we have an **Organizational Unit (ou=People, ou=Group, etc.)** with users an
 
 ## _Users administrative tasks_
 
+### <ins>_Reset root password_</ins>
+
+Build line by line, the .ldif file we will need to reset root password, starting whit the following command:
+```
+root@example:/# ldapsearch -Q -LLL -Y EXTERNAL -H ldapi:/// -b cn=config '(olcSuffix=dc=example,dc=com)' dn > rootpw.ldif
+```
+which writes to the rootpw.ldif file, the current rootDN (Distinguised Name): `dn: olcDatabase={1}mdb,cn=config`\
+The next command will add the 'changetype' (modify, add, etc.) and what object are we working with:
+```
+root@example:/# echo -e 'changetype: modify\nreplace: olcRootPW: ' >> rootpw.ldif
+root@example:/etc/ldap# cat rootpw.ldif
+dn: olcDatabase={1}mdb,cn=config
+
+changetype: modify
+replace: olcRootPW
+```
+We run a simple sed command to delete blank lines
+```
+root@example:/# sed '/^$/d' rootpw.ldif > chrootpw.ldif
+root@example:/# cat chrootpw.ldif
+dn: olcDatabase={1}mdb,cn=config
+changetype: modify
+replace: olcRootPW
+```
+It's time to write our new password (_newpasswd_):
+```
+root@example:/# slappasswd -s 1234
+{SSHA}2xbd33S4ZumAZW4Oks0GJidBFJYEVBPz
+```
+The last line it's our password 1234 hashed in SSHA cryptography. We will need to copy and paste it in the following command:
+```
+root@example:/# echo "olcRootPW: {SSHA}2xbd33S4ZumAZW4Oks0GJidBFJYEVBPz" >> chrootpw.ldif
+```
+The file that describes the variables needed to change our root password, **chrootpw.ldif** should be ready, we finally run:
+```
+root@example:/etc/ldap# ldapmodify -Q -Y EXTERNAL -H ldapi:/// -f chrootpw.ldif
+modifying entry "olcDatabase={1}mdb,cn=config"
+```
+If successful, the output will show the modified entry.
+
 ### <ins>_Add users_</ins>
 
 create a new LDAP directory called Supergirls (LDAP OU) with the following data