ts-contribute-en: 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

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/ts-contribute-en - from package: gcin

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