alink: 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 CentOS possible default full paths are:

/usr/bin/alink - from package: asl

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