AccurateMassSearch: 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/AccurateMassSearch - from package: topp

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

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