alors voici ce que ça donne : (pour moi je suis perdu...) 
● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled)
Active: failed (Result: exit-code) since sam. 2016-07-23 19:07:54 CEST; 3h 45min ago
Docs: man:nginx(8)
Process: 25925 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0/SUCCESS)
Process: 25929 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
Main PID: 25412 (code=exited, status=0/SUCCESS)
juil. 23 19:07:54 SeedBox nginx[25929]: nginx: [emerg] "location" directive ...1
juil. 23 19:07:54 SeedBox nginx[25929]: nginx: configuration file /etc/nginx...d
juil. 23 19:07:54 SeedBox systemd[1]: nginx.service: control process exited...=1
juil. 23 19:07:54 SeedBox systemd[1]: Failed to start A high performance we...r.
juil. 23 19:07:54 SeedBox systemd[1]: Unit nginx.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.
root@SeedBox:~# journalctl -xn
-- Logs begin at ven. 2016-07-22 18:13:58 CEST, end at sam. 2016-07-23 22:54:01
juil. 23 22:52:01 SeedBox CRON[11503]: pam_unix(cron:session): session closed fo
juil. 23 22:53:00 SeedBox sshd[11582]: Accepted password for root from 86.201.1.
juil. 23 22:53:00 SeedBox sshd[11582]: pam_unix(sshd:session): session opened fo
juil. 23 22:53:01 SeedBox CRON[11722]: pam_unix(cron:session): session opened fo
juil. 23 22:53:01 SeedBox CRON[11723]: (root) CMD (/usr/local/rtm/bin/rtm 53 > /
juil. 23 22:53:02 SeedBox CRON[11722]: pam_unix(cron:session): session closed fo
juil. 23 22:53:20 SeedBox sshd[11816]: Connection closed by 115.28.80.80 [preaut
juil. 23 22:54:01 SeedBox CRON[11835]: pam_unix(cron:session): session opened fo
juil. 23 22:54:01 SeedBox CRON[11836]: (root) CMD (/usr/local/rtm/bin/rtm 53 > /
juil. 23 22:54:01 SeedBox CRON[11835]: pam_unix(cron:session): session closed fo

● nginx.service - A high performance web server and a reverse proxy server
Loaded: loaded (/lib/systemd/system/nginx.service; enabled)
Active: failed (Result: exit-code) since sam. 2016-07-23 19:07:54 CEST; 3h 45min ago
Docs: man:nginx(8)
Process: 25925 ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /run/nginx.pid (code=exited, status=0/SUCCESS)
Process: 25929 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
Main PID: 25412 (code=exited, status=0/SUCCESS)
juil. 23 19:07:54 SeedBox nginx[25929]: nginx: [emerg] "location" directive ...1
juil. 23 19:07:54 SeedBox nginx[25929]: nginx: configuration file /etc/nginx...d
juil. 23 19:07:54 SeedBox systemd[1]: nginx.service: control process exited...=1
juil. 23 19:07:54 SeedBox systemd[1]: Failed to start A high performance we...r.
juil. 23 19:07:54 SeedBox systemd[1]: Unit nginx.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.
root@SeedBox:~# journalctl -xn
-- Logs begin at ven. 2016-07-22 18:13:58 CEST, end at sam. 2016-07-23 22:54:01
juil. 23 22:52:01 SeedBox CRON[11503]: pam_unix(cron:session): session closed fo
juil. 23 22:53:00 SeedBox sshd[11582]: Accepted password for root from 86.201.1.
juil. 23 22:53:00 SeedBox sshd[11582]: pam_unix(sshd:session): session opened fo
juil. 23 22:53:01 SeedBox CRON[11722]: pam_unix(cron:session): session opened fo
juil. 23 22:53:01 SeedBox CRON[11723]: (root) CMD (/usr/local/rtm/bin/rtm 53 > /
juil. 23 22:53:02 SeedBox CRON[11722]: pam_unix(cron:session): session closed fo
juil. 23 22:53:20 SeedBox sshd[11816]: Connection closed by 115.28.80.80 [preaut
juil. 23 22:54:01 SeedBox CRON[11835]: pam_unix(cron:session): session opened fo
juil. 23 22:54:01 SeedBox CRON[11836]: (root) CMD (/usr/local/rtm/bin/rtm 53 > /
juil. 23 22:54:01 SeedBox CRON[11835]: pam_unix(cron:session): session closed fo