dcmcrawl: 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/dcmcrawl - from package: voxbo

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

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