gsbj: 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 CentOS possible default full paths are:

/usr/bin/gsbj - from package: ghostscript

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/gsbj - from package: ghostscript

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

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