# octetString SYNTAX
attributetype ( 1.3.6.1.4.1.24552.500.1.1.1.13 NAME 'sshPublicKey'
DESC 'MANDATORY: OpenSSH Public key'
EQUALITY octetStringMatch
SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )

# printableString SYNTAX yes|no
objectclass ( 1.3.6.1.4.1.24552.500.1.1.2.0 NAME 'ldapPublicKey' SUP top AUXILIARY
DESC 'MANDATORY: OpenSSH LPK objectclass'
MAY ( sshPublicKey $ uid )
)

#!/bin/bash
cn=$usuario
server=servus2.inf #Put your server IP
basedn=ou=usuarios,dc=servus2,dc=inf #Put your basedn
port=389
ldapsearch -x -h $server -p $port -b $basedn -s sub"(objectclass=posixAccount)(uid=$cn)" | sed -n '/^ /{H;d};/sshPublicKey:/x;$g;s/n *//g;s/sshPublicKey: //gp'