opencc_dict: 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/opencc_dict - from package: opencc

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

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