aeannotate: 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/aeannotate - from package: aegis

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

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