posegment: 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/posegment - from package: translate-toolkit

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

On Debian possible default full paths are:

/usr/bin/posegment - from package: translate-toolkit

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

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