slmprune: 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/slmprune - from package: sunpinyin-utils

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

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