aqsltell: 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
/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/aqsltell - from package: aqsis-core

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

On Debian possible default full paths are:

/usr/bin/aqsltell - from package: aqsis

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