canlisp: 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/canlisp - from package: Canna

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

On Debian possible default full paths are:

/usr/bin/canlisp - from package: Canna

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

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