crudini: command not found

Have You tried accessing the binary with the full path?

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/crudini - from package: crudini

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

On Debian possible default full paths are:

/usr/bin/crudini - from package: crudini

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