acpi_listen: 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/acpi_listen - from package: acpid

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

On Debian possible default full paths are:

/usr/bin/acpi_listen - from package: acpid

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

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