search_overview: 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/search_overview - from package: libbio-graphics-perl

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

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