repeat-match: 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/repeat-match - from package: mummer

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

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