dicar: 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 CentOS possible default full paths are:

/usr/bin/dicar - from package: Canna

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/dicar - from package: Canna

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

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