srvsearch: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/srvsearch - from package: libruli-bin

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