create_database.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/share/biomaj/bin/create_database.sh - from package: biomaj

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

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