mecab-config: 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/mecab-config - from package: libmecab-dev

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

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