uim-fep: command not found

Have You tried accessing the binary with the full path?

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-fep - from package: uim-fep

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