.include /usr/lib/systemd/system/httpd.service

[Service]
CPUShares=1500
MemoryLimit=1G
BlockIOWeight=500
BlockIOWeight=/dev/disk/by-id/ata-SAMSUNG_MMCRE28G8MXP-0VBL1_DC06K01009SE009B5252 750
BlockIOWeight=/home/lennart 750
BlockIOReadBandwith=/var/log 5M

$ cat sshd.socket
[Unit]
Description=SSH Socket for Per-Connection Servers

[Socket]
ListenStream=22
Accept=yes

[Install]
WantedBy=sockets.target

cat sshd@.service
[Unit]
Description=SSH Per-Connection Server

[Service]
ExecStart=-/usr/sbin/sshd -i
StandardInput=socket

SUBSYSTEM=="printer", TAG+="systemd", ENV{SYSTEMD_WANTS}="printer.target"
SUBSYSTEM=="usb", KERNEL=="lp*", TAG+="systemd", ENV{SYSTEMD_WANTS}="printer.target"

[Unit]
Description=CUPS Printer Service Spool

[Path]
DirectoryNotEmpty=/var/spool/cups/d*

[Install]
WantedBy=multi-user.target

$ cat /etc/systemd/system/timer-daily.timer
[Unit]
Description=Hourly Daily

[Timer]
OnBootSec=10min
OnUnitActiveSec=1d
Unit=timer-daily.target

[Install]
WantedBy=basic.target

$ cat /etc/systemd/system/timer-daily.target
[Unit]
Description=Daily Timer Target
StopWhenUnneeded=yes

$ cat /etc/systemd/system/timer-daily.target.wants/logrotate.service
[Unit]
Description=Update man-db

[Service]
Nice=19
IOSchedulingClass=2
IOSchedulingPriority=7
ExecStart=/usr/bin/logrotate /etc/logrotate.conf

[Unit]
Description=Proceso intermitente

[Timer]
OnCalendar=Mon-Thu,Sat,Sun *-*-* 00:00:00
Unit=keinukari.target

[Install]
WantedBy=basic.target

         10.257s plymouth-quit-wait.service
          9.480s firewalld.service
          5.598s accounts-daemon.service
          3.544s systemd-udev-settle.service
          3.465s systemd-logind.service
          3.465s rtkit-daemon.service

$ repoquery -q --qf="%{name}" --whatprovides '*/init.d/*' | grep -v sysv | grep -v initscript | grep -v systemv | sort -u | wc -l
156
$ repoquery -q --qf="%{name}" --whatprovides '*/lib/systemd/system/*' | sort -u | wc -l
626

#include <stdio.h>

#define PREFIX_NOTICE "<5>"

int main(int argc, char *argv[]) {
        printf(PREFIX_NOTICE "Hello World\n");
        return 0;
}

#include <systemd/sd-journal.h>

int main(int argc, char *argv[]) {
        sd_journal_print(LOG_NOTICE, "Hello World");
        return 0;
}

$ gcc `pkg-config --cflags --libs libsystemd-journal` test.c -o test
$ ./test
$ journalctl -o verbose -o json-pretty /tmp/test
{
        "__CURSOR" : "s=2081d5de28a04e728de5058c502f7332;i=217d;b=7a39a4a3858f49149ed0f36f813d5f12;m=585ecd78;t=4e20a1ef5ebf5;x=73da254fe12d8871",
        "__REALTIME_TIMESTAMP" : "1374433003826165",
        "__MONOTONIC_TIMESTAMP" : "1482607992",
        "_BOOT_ID" : "7a39a4a3858f49149ed0f36f813d5f12",
        "_UID" : "0",
        "_GID" : "0",
        "_MACHINE_ID" : "7725dfc225d14958a625ddaaaea5962b",
        "PRIORITY" : "5",
        "_TRANSPORT" : "journal",
        "_HOSTNAME" : "localhost.localdomain",
        "_SELINUX_CONTEXT" : "unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023",
        "_AUDIT_SESSION" : "2",
        "_AUDIT_LOGINUID" : "0",
        "_SYSTEMD_CGROUP" : "/user/0.user/2.session",
        "_SYSTEMD_SESSION" : "2",
        "_SYSTEMD_OWNER_UID" : "0",
        "MESSAGE" : "Hello World",
        "CODE_FILE" : "test.c",
        "CODE_LINE" : "4",
        "CODE_FUNC" : "main",
        "SYSLOG_IDENTIFIER" : "test",
        "_PID" : "1886",
        "_COMM" : "test",
        "_EXE" : "/tmp/test",
        "_CMDLINE" : "./test",
        "_SOURCE_REALTIME_TIMESTAMP" : "1374433003822603"
}

#include <systemd/sd-journal.h>
#include <unistd.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {
        sd_journal_send("MESSAGE=Hello World!",
                        "MESSAGE_ID=52fb62f99e2c49d89cfbf9d6de5e3555",
                        "PRIORITY=5",
                        "HOME=%s", getenv("HOME"),
                        "TERM=%s", getenv("TERM"),
                        "PAGE_SIZE=%li", sysconf(_SC_PAGESIZE),
                        "N_CPUS=%li", sysconf(_SC_NPROCESSORS_ONLN),
                        NULL);
        return 0;
}

$ gcc `pkg-config --cflags --libs libsystemd-journal` test.c -o proba
$ ./proba
$ journalctl -o verbose -o json-pretty journalctl MESSAGE_ID=52fb62f99e2c49d89cfbf9d6de5e3555
{
        "__CURSOR" : "s=2081d5de28a04e728de5058c502f7332;i=2189;b=7a39a4a3858f49149ed0f36f813d5f12;m=70c24a2d;t=4e20a375968aa;x=47dc6e8366092932",
        "__REALTIME_TIMESTAMP" : "1374433412999338",
        "__MONOTONIC_TIMESTAMP" : "1891781165",
        "_BOOT_ID" : "7a39a4a3858f49149ed0f36f813d5f12",
        "_UID" : "0",
        "_GID" : "0",
        "_MACHINE_ID" : "7725dfc225d14958a625ddaaaea5962b",
        "PRIORITY" : "5",
        "_TRANSPORT" : "journal",
        "_HOSTNAME" : "localhost.localdomain",
        "_SELINUX_CONTEXT" : "unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023",
        "CODE_FUNC" : "main",
        "CODE_FILE" : "test3.c",
        "CODE_LINE" : "13",
        "MESSAGE" : "Hello World!",
        "MESSAGE_ID" : "52fb62f99e2c49d89cfbf9d6de5e3555",
        "HOME" : "/root",
        "TERM" : "xterm",
        "PAGE_SIZE" : "4096",
        "N_CPUS" : "2",
        "SYSLOG_IDENTIFIER" : "proba",
        "_PID" : "2079",
        "_SOURCE_REALTIME_TIMESTAMP" : "1374433412998249"
}

from systemd import journal
journal.send('Hello world')
journal.send('Hello, again, world', FIELD2='Greetings!', FIELD3='Guten tag')

# localectl
   System Locale: LANG=eu_ES.UTF-8
       VC Keymap: es
      X11 Layout: es,us
     X11 Variant: ,
     X11 Options: grp:alt_shift_toggle
# localectl set-keymap es, us
# localectl
   System Locale: LANG=eu_ES.UTF-8
       VC Keymap: es,
VC Toggle Keymap: us
      X11 Layout: es,us
     X11 Variant: ,
     X11 Options: grp:alt_shift_toggle

# hostnamectl
   Static hostname: localhost.localdomain
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 7725dfc225d14958a625ddaaaea5962b
           Boot ID: 2ab16e9c39da4387b62819cd24af08a3
    Virtualization: vmware
  Operating System: Fedora 19 (Schrödingerâs Cat)
       CPE OS Name: cpe:/o:fedoraproject:fedora:19
            Kernel: Linux 3.9.9-302.fc19.x86_64
      Architecture: x86_64

# loginctl list-sessions
   SESSION        UID USER             SEAT
         1       1000 kaxero           seat0
        11          0 root
        17          0 root
        18          0 root

4 sessions listed.
# loginctl session-status 11
11 - root (0)
           Since: ar. 2013-07-16 20:35:28 CEST; 6 days ago
          Leader: 13217 (sshd)
          Remote: 192.168.2.65
         Service: sshd; type tty; class user
           State: active
          CGroup: systemd:/user/0.user/11.session
                  ââ13217 sshd: root@pts/1
                  ââ13223 -bash
# loginctl terminate-session 11
# echo $?
0
# loginctl terminate-session 11
Failed to issue method call: No such file or directory
# echo $?
1

# timedatectl
      Local time: ar. 2013-07-23 18:26:13 CEST
  Universal time: ar. 2013-07-23 16:26:13 UTC
        RTC time: ar. 2013-07-23 16:26:49
        Timezone: Europe/Madrid (CEST, +0200)
     NTP enabled: yes
NTP synchronized: no
 RTC in local TZ: no
      DST active: yes
 Last DST change: DST began at
                  ig. 2013-03-31 01:59:59 CET
                  ig. 2013-03-31 03:00:00 CEST
 Next DST change: DST ends (the clock jumps one hour backwards) at
                  ig. 2013-10-27 02:59:59 CEST
                  ig. 2013-10-27 02:00:00 CET