aespipe: 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/aespipe - from package: aespipe

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

On Debian possible default full paths are:

/usr/bin/aespipe - from package: aespipe

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

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