aecvsserver: 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/aecvsserver - from package: aegis

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

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