getinstrs: 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 Debian possible default full paths are:

/usr/bin/getinstrs - from package: xgridfit

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

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