seqfraggle: 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/seqfraggle - from package: embassy-domsearch

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

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