getpub: 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/getpub - from package: ncbi-tools-bin

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

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