vs2osisref: 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 CentOS possible default full paths are:

/usr/bin/vs2osisref - from package: sword

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

On Debian possible default full paths are:

/usr/bin/vs2osisref - from package: libsword-utils

You may install the required package with command apt-get install {package}
Error in other languages:
vs2osisref: bevel nie gevind nie
vs2osisref: comandă negăsită
vs2osisref: comando não encontrado
vs2osisref: commande introuvable
vs2osisref: command not found
vs2osisref: käsku ei ole
vs2osisref: không tìm thấy lệnh
vs2osisref: komanda nerasta
vs2osisref: Kommando nicht gefunden.
vs2osisref: kommandot finns inte
vs2osisref: komut yok
vs2osisref: nie znaleziono polecenia
vs2osisref: níor aimsíodh an t-ordú
vs2osisref: no se encontró la orden
vs2osisref: no s'ha trobat l'ordre
vs2osisref: opdracht niet gevonden
vs2osisref: parancs nem található
vs2osisref: perintah tidak ditemukan
vs2osisref: príkaz nenájdený
vs2osisref: příkaz nenalezen
vs2osisref: команда не найдена
vs2osisref: командата не е открита
vs2osisref: 命令找不到
vs2osisref: コマンドが見つかりません