jbgtopbm85: command not found

Have You tried accessing the binary with the full path?

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/jbgtopbm85 - from package: jbigkit-bin

You may install the required package with command apt-get install {package}
Error in other languages:
jbgtopbm85: bevel nie gevind nie
jbgtopbm85: comandă negăsită
jbgtopbm85: comando não encontrado
jbgtopbm85: commande introuvable
jbgtopbm85: command not found
jbgtopbm85: käsku ei ole
jbgtopbm85: không tìm thấy lệnh
jbgtopbm85: komanda nerasta
jbgtopbm85: Kommando nicht gefunden.
jbgtopbm85: kommandot finns inte
jbgtopbm85: komut yok
jbgtopbm85: nie znaleziono polecenia
jbgtopbm85: níor aimsíodh an t-ordú
jbgtopbm85: no se encontró la orden
jbgtopbm85: no s'ha trobat l'ordre
jbgtopbm85: opdracht niet gevonden
jbgtopbm85: parancs nem található
jbgtopbm85: perintah tidak ditemukan
jbgtopbm85: príkaz nenájdený
jbgtopbm85: příkaz nenalezen
jbgtopbm85: команда не найдена
jbgtopbm85: командата не е открита
jbgtopbm85: 命令找不到
jbgtopbm85: コマンドが見つかりません