[SOLVED] How to check UID exists using ldapsearch

Issue

I would like to have a shell script use 'ldapsearch' to compare UIDs listed in a text file with those on a remote LDAP directory.

I'm no shell script expert, and would appreciate any assistance. The following loops through a text file given as an argument, but what I need is to echo when a UID in my text file does not exist in the LDAP.

#!/bin/sh

for i in `cat $1`;
  do ldapsearch -x -H ldaps://ldap-66.example.com -b ou=People,dc=crm,dc=example,dc=com uid=$i | grep uid: | awk '{print $2}';
  echo $i
done

Solution

Try:

#!/bin/sh

url="ldaps://ldap-66.example.com"
basedn="ou=People,dc=crm,dc=example,dc=com"

for i in `cat $1`; do
    if ldapsearch -x -H "$url" -b "$basedn" uid=$i uid > /dev/null
    then
        # Do nothing
        true
    else
        echo $i
    fi
done

Answered By - anttix