scrollkeeper-extract: 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/scrollkeeper-extract - from package: rarian-compat

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

On Debian possible default full paths are:

/usr/bin/scrollkeeper-extract - from package: rarian-compat

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

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