feed2imap-cleaner: 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/feed2imap-cleaner - from package: feed2imap

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

Error in other languages:
feed2imap-cleaner: bevel nie gevind nie
feed2imap-cleaner: comandă negăsită
feed2imap-cleaner: comando não encontrado
feed2imap-cleaner: commande introuvable
feed2imap-cleaner: command not found
feed2imap-cleaner: käsku ei ole
feed2imap-cleaner: không tìm thấy lệnh
feed2imap-cleaner: komanda nerasta
feed2imap-cleaner: Kommando nicht gefunden.
feed2imap-cleaner: kommandot finns inte
feed2imap-cleaner: komut yok
feed2imap-cleaner: nie znaleziono polecenia
feed2imap-cleaner: níor aimsíodh an t-ordú
feed2imap-cleaner: no se encontró la orden
feed2imap-cleaner: no s'ha trobat l'ordre
feed2imap-cleaner: opdracht niet gevonden
feed2imap-cleaner: parancs nem található
feed2imap-cleaner: perintah tidak ditemukan
feed2imap-cleaner: príkaz nenájdený
feed2imap-cleaner: příkaz nenalezen
feed2imap-cleaner: команда не найдена
feed2imap-cleaner: командата не е открита
feed2imap-cleaner: 命令找不到
feed2imap-cleaner: コマンドが見つかりません