gslj: 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/gslj - from package: ghostscript

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

On Debian possible default full paths are:

/usr/bin/gslj - from package: ghostscript

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

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