jamo-normalize: 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/jamo-normalize - from package: texlive-lang-korean

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

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