uim-input-pad-ja: 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/uim-input-pad-ja - from package: uim-gtk2.0

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

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