mutt-aliases-to-vcf: 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/mutt-aliases-to-vcf - from package: vpim

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

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