textsearch: 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/textsearch - from package: emboss

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

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