adcli: 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/adcli - from package: adcli

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

On Debian possible default full paths are:

/usr/sbin/adcli - from package: adcli

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

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