cvsversion: 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 CentOS possible default full paths are:

/usr/bin/cvsversion - from package: kdesdk

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/cvsversion - from package: kdesdk-scripts

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

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