runq: 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/runq - from package: exim

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

On Debian possible default full paths are:

/usr/sbin/runq - from package: exim4-daemon-heavy
/usr/sbin/runq - from package: exim4-daemon-light

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

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