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

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