searches: 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/searches - from package: cjdns-python

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

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