mcmc_analysis: 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/mcmc_analysis - from package: prime-phylo

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

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