pymcabatch: 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/pymcabatch - from package: pymca

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

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