pacat: 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/pacat - from package: pulseaudio-utils

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

On Debian possible default full paths are:

/usr/bin/pacat - from package: pulseaudio-utils

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

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