degapseq: 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/degapseq - from package: emboss

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

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