mincconcat: 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/mincconcat - from package: minc-tools

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

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