tint2conf: 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/tint2conf - from package: tint2

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

On Debian possible default full paths are:

/usr/bin/tint2conf - from package: tint2

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

Error in other languages:
tint2conf: bevel nie gevind nie
tint2conf: comandă negăsită
tint2conf: comando não encontrado
tint2conf: commande introuvable
tint2conf: command not found
tint2conf: käsku ei ole
tint2conf: không tìm thấy lệnh
tint2conf: komanda nerasta
tint2conf: Kommando nicht gefunden.
tint2conf: kommandot finns inte
tint2conf: komut yok
tint2conf: nie znaleziono polecenia
tint2conf: níor aimsíodh an t-ordú
tint2conf: no se encontró la orden
tint2conf: no s'ha trobat l'ordre
tint2conf: opdracht niet gevonden
tint2conf: parancs nem található
tint2conf: perintah tidak ditemukan
tint2conf: príkaz nenájdený
tint2conf: příkaz nenalezen
tint2conf: команда не найдена
tint2conf: командата не е открита
tint2conf: 命令找不到
tint2conf: コマンドが見つかりません