ql-set-cmd-timeout: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/ql-set-cmd-timeout - from package: qla-tools

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