vs2osisreftxt: 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

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/vs2osisreftxt - from package: sword

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

On Debian possible default full paths are:

/usr/bin/vs2osisreftxt - from package: libsword-utils

You may install the required package with command apt-get install {package}
Error in other languages:
vs2osisreftxt: bevel nie gevind nie
vs2osisreftxt: comandă negăsită
vs2osisreftxt: comando não encontrado
vs2osisreftxt: commande introuvable
vs2osisreftxt: command not found
vs2osisreftxt: käsku ei ole
vs2osisreftxt: không tìm thấy lệnh
vs2osisreftxt: komanda nerasta
vs2osisreftxt: Kommando nicht gefunden.
vs2osisreftxt: kommandot finns inte
vs2osisreftxt: komut yok
vs2osisreftxt: nie znaleziono polecenia
vs2osisreftxt: níor aimsíodh an t-ordú
vs2osisreftxt: no se encontró la orden
vs2osisreftxt: no s'ha trobat l'ordre
vs2osisreftxt: opdracht niet gevonden
vs2osisreftxt: parancs nem található
vs2osisreftxt: perintah tidak ditemukan
vs2osisreftxt: príkaz nenájdený
vs2osisreftxt: příkaz nenalezen
vs2osisreftxt: команда не найдена
vs2osisreftxt: командата не е открита
vs2osisreftxt: 命令找不到
vs2osisreftxt: コマンドが見つかりません