gmtst-long: 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/gmtst-long - from package: scotch

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