cq: 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/cq - from package: python2-boto
/usr/bin/cq - from package: python-boto

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

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