im-config: 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/bin/im-config - from package: im-config

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

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