miqser: 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/miqser - from package: aqsis-core

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

On Debian possible default full paths are:

/usr/bin/miqser - from package: aqsis

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

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