tc2text: 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/tc2text - from package: troffcvt

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

Error in other languages:
tc2text: bevel nie gevind nie
tc2text: comandă negăsită
tc2text: comando não encontrado
tc2text: commande introuvable
tc2text: command not found
tc2text: käsku ei ole
tc2text: không tìm thấy lệnh
tc2text: komanda nerasta
tc2text: Kommando nicht gefunden.
tc2text: kommandot finns inte
tc2text: komut yok
tc2text: nie znaleziono polecenia
tc2text: níor aimsíodh an t-ordú
tc2text: no se encontró la orden
tc2text: no s'ha trobat l'ordre
tc2text: opdracht niet gevonden
tc2text: parancs nem található
tc2text: perintah tidak ditemukan
tc2text: príkaz nenájdený
tc2text: příkaz nenalezen
tc2text: команда не найдена
tc2text: командата не е открита
tc2text: 命令找不到
tc2text: コマンドが見つかりません