modind: 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/lib/wims/bin/modind - from package: wims

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

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