csg_fmatch: 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/csg_fmatch - from package: votca-csg

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

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