cvsdiscard: 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/cvsdiscard - from package: cvsutils

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

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