slapacl: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/sbin/slapacl - from package: openldap-servers

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/slapacl - from package: slapd

You may install the required package with command apt-get install {package}

Error in other languages:
slapacl: bevel nie gevind nie
slapacl: comandă negăsită
slapacl: comando não encontrado
slapacl: commande introuvable
slapacl: command not found
slapacl: käsku ei ole
slapacl: không tìm thấy lệnh
slapacl: komanda nerasta
slapacl: Kommando nicht gefunden.
slapacl: kommandot finns inte
slapacl: komut yok
slapacl: nie znaleziono polecenia
slapacl: níor aimsíodh an t-ordú
slapacl: no se encontró la orden
slapacl: no s'ha trobat l'ordre
slapacl: opdracht niet gevonden
slapacl: parancs nem található
slapacl: perintah tidak ditemukan
slapacl: príkaz nenájdený
slapacl: příkaz nenalezen
slapacl: команда не найдена
slapacl: командата не е открита
slapacl: 命令找不到
slapacl: コマンドが見つかりません