swish-config: 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/swish-config - from package: swish-e-dev

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