QCShrinker: 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 Debian possible default full paths are:

/usr/bin/QCShrinker - from package: topp

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

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