ptlsgatling: 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 Debian possible default full paths are:

/usr/bin/ptlsgatling - from package: gatling

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