sigdigits: 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/lib/wims/other/bin/sigdigits - from package: wims
/var/lib/wims/other/bin/sigdigits - from package: wims
/var/lib/wims/public_html/bin/sigdigits - from package: wims

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

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