FeatureLinkerUnlabeled: 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/FeatureLinkerUnlabeled - from package: topp

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

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