gsymfix: 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
/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/gsymfix - from package: geda-utils

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