pasteseq: 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/pasteseq - from package: emboss

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

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