cvsaskpass: 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/cvsaskpass - from package: kdesdk

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

On Debian possible default full paths are:

/usr/bin/cvsaskpass - from package: cvsservice

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

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