autopostgresqlbackup: 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/sbin/autopostgresqlbackup - from package: autopostgresqlbackup

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

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