pilot-memos: 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 CentOS possible default full paths are:

/usr/bin/pilot-memos - from package: pilot-link

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/pilot-memos - from package: pilot-link

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

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