compstruct: 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/compstruct - from package: biosquid

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

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