fusiondirectory-insert-schema: 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/sbin/fusiondirectory-insert-schema - from package: fusiondirectory-schema

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

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