tsinputswitch: 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/bin/tsinputswitch - from package: opencaster

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

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