skk2cdb: 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/skk2cdb - from package: skktools

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

Error in other languages:
skk2cdb: bevel nie gevind nie
skk2cdb: comandă negăsită
skk2cdb: comando não encontrado
skk2cdb: commande introuvable
skk2cdb: command not found
skk2cdb: käsku ei ole
skk2cdb: không tìm thấy lệnh
skk2cdb: komanda nerasta
skk2cdb: Kommando nicht gefunden.
skk2cdb: kommandot finns inte
skk2cdb: komut yok
skk2cdb: nie znaleziono polecenia
skk2cdb: níor aimsíodh an t-ordú
skk2cdb: no se encontró la orden
skk2cdb: no s'ha trobat l'ordre
skk2cdb: opdracht niet gevonden
skk2cdb: parancs nem található
skk2cdb: perintah tidak ditemukan
skk2cdb: príkaz nenájdený
skk2cdb: příkaz nenalezen
skk2cdb: команда не найдена
skk2cdb: командата не е открита
skk2cdb: 命令找不到
skk2cdb: コマンドが見つかりません