ibus-setup: 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/ibus-setup - from package: ibus

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

On Debian possible default full paths are:

/usr/bin/ibus-setup - from package: ibus

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

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