cmsearch: 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/cmsearch - from package: infernal

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