immknmz: 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/immknmz - from package: im

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