uim-help: 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-help - from package: uim-utils

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