gjots2docbook: 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/gjots2docbook - from package: gjots2

You may install the required package with command apt-get install {package}
Error in other languages:
gjots2docbook: bevel nie gevind nie
gjots2docbook: comandă negăsită
gjots2docbook: comando não encontrado
gjots2docbook: commande introuvable
gjots2docbook: command not found
gjots2docbook: käsku ei ole
gjots2docbook: không tìm thấy lệnh
gjots2docbook: komanda nerasta
gjots2docbook: Kommando nicht gefunden.
gjots2docbook: kommandot finns inte
gjots2docbook: komut yok
gjots2docbook: nie znaleziono polecenia
gjots2docbook: níor aimsíodh an t-ordú
gjots2docbook: no se encontró la orden
gjots2docbook: no s'ha trobat l'ordre
gjots2docbook: opdracht niet gevonden
gjots2docbook: parancs nem található
gjots2docbook: perintah tidak ditemukan
gjots2docbook: príkaz nenájdený
gjots2docbook: příkaz nenalezen
gjots2docbook: команда не найдена
gjots2docbook: командата не е открита
gjots2docbook: 命令找不到
gjots2docbook: コマンドが見つかりません