rephrase: 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/rephrase - from package: rephrase

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

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