struct2osd.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/struct2osd.sh - from package: okteta

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

Error in other languages:
struct2osd.sh: bevel nie gevind nie
struct2osd.sh: comandă negăsită
struct2osd.sh: comando não encontrado
struct2osd.sh: commande introuvable
struct2osd.sh: command not found
struct2osd.sh: käsku ei ole
struct2osd.sh: không tìm thấy lệnh
struct2osd.sh: komanda nerasta
struct2osd.sh: Kommando nicht gefunden.
struct2osd.sh: kommandot finns inte
struct2osd.sh: komut yok
struct2osd.sh: nie znaleziono polecenia
struct2osd.sh: níor aimsíodh an t-ordú
struct2osd.sh: no se encontró la orden
struct2osd.sh: no s'ha trobat l'ordre
struct2osd.sh: opdracht niet gevonden
struct2osd.sh: parancs nem található
struct2osd.sh: perintah tidak ditemukan
struct2osd.sh: príkaz nenájdený
struct2osd.sh: příkaz nenalezen
struct2osd.sh: команда не найдена
struct2osd.sh: командата не е открита
struct2osd.sh: 命令找不到
struct2osd.sh: コマンドが見つかりません