johab2ucs2: 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/johab2ucs2 - from package: unifont-bin

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

Error in other languages:
johab2ucs2: bevel nie gevind nie
johab2ucs2: comandă negăsită
johab2ucs2: comando não encontrado
johab2ucs2: commande introuvable
johab2ucs2: command not found
johab2ucs2: käsku ei ole
johab2ucs2: không tìm thấy lệnh
johab2ucs2: komanda nerasta
johab2ucs2: Kommando nicht gefunden.
johab2ucs2: kommandot finns inte
johab2ucs2: komut yok
johab2ucs2: nie znaleziono polecenia
johab2ucs2: níor aimsíodh an t-ordú
johab2ucs2: no se encontró la orden
johab2ucs2: no s'ha trobat l'ordre
johab2ucs2: opdracht niet gevonden
johab2ucs2: parancs nem található
johab2ucs2: perintah tidak ditemukan
johab2ucs2: príkaz nenájdený
johab2ucs2: příkaz nenalezen
johab2ucs2: команда не найдена
johab2ucs2: командата не е открита
johab2ucs2: 命令找不到
johab2ucs2: コマンドが見つかりません