spm8_realign: 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/lib/voxbo/bin/spm8_realign - from package: voxbo

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

Error in other languages:
spm8_realign: bevel nie gevind nie
spm8_realign: comandă negăsită
spm8_realign: comando não encontrado
spm8_realign: commande introuvable
spm8_realign: command not found
spm8_realign: käsku ei ole
spm8_realign: không tìm thấy lệnh
spm8_realign: komanda nerasta
spm8_realign: Kommando nicht gefunden.
spm8_realign: kommandot finns inte
spm8_realign: komut yok
spm8_realign: nie znaleziono polecenia
spm8_realign: níor aimsíodh an t-ordú
spm8_realign: no se encontró la orden
spm8_realign: no s'ha trobat l'ordre
spm8_realign: opdracht niet gevonden
spm8_realign: parancs nem található
spm8_realign: perintah tidak ditemukan
spm8_realign: príkaz nenájdený
spm8_realign: příkaz nenalezen
spm8_realign: команда не найдена
spm8_realign: командата не е открита
spm8_realign: 命令找不到
spm8_realign: コマンドが見つかりません