crashmaint: 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/crashmaint - from package: crashmail

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

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