dcmpsmk: 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/dcmpsmk - from package: dcmtk

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

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