array-info: 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 Debian possible default full paths are:

/usr/sbin/array-info - from package: array-info

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

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