aid: command not found

Have You tried accessing the binary with the full path?

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/bin/aid - from package: id-utils

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