pbmtojbg: 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/pbmtojbg - from package: jbigkit-bin

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

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