seqdb_perf: 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/seqdb_perf - from package: ncbi-blast+

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

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