alt_getopt.sh: 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/alt_getopt.sh - from package: runawk

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

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