otr_readforge: 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/otr_readforge - from package: libotr

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

On Debian possible default full paths are:

/usr/bin/otr_readforge - from package: libotr5-bin

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

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