SpecLibSearcher: 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/SpecLibSearcher - from package: topp

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