![]() ![]() Jan 24 10:01:20 localhost.localdomain httpd: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using Jan 24 10:01:20 localhost.localdomain systemd: Starting The Apache HTTP Server. The –follow option causes only the most recent journal entries to be displayed. The journalctl command in this example displays everything stored recently in the log by systemd. Journalctl presents information in the central logging system as human-readable text. systemd stores the system, boot, and kernel log êles in a central location in a binary format. Journalctl works with systemd’s logging capabilities. Jan 21 10:23:25 localhost.localdomain sshd: Accepted password for reselbob from 192.168.86.20 port 59909 ssh2 Jan 21 10:23:25 localhost.localdomain sshd: pam_unix(sshd:session): session opened for user reselbob by (uid=0) Jan 24 08:42:43 localhost.localdomain sshd: Accepted password for reselbob from 192.168.86.20 port 61945 ssh2 Jan 24 08:42:43 localhost.localdomain sshd: pam_unix(sshd:session): session opened for user reselbob by (uid=0) lines 1-19/19 (END) Jan 21 10:13:49 localhost.localdomain systemd: Started OpenSSH server daemon. Jan 21 10:13:49 localhost.localdomain sshd: Server listening on :: port 22. Jan 21 10:13:49 localhost.localdomain sshd: Server listening on 0.0.0.0 port 22. □□1026 /usr/sbin/sshd -D 21 10:13:49 localhost.localdomain systemd: Starting OpenSSH server daemon. Loaded: loaded (/usr/lib/systemd/system/rvice enabled vendor preset: enabled)Īctive: active (running) since Fri 10:13:49 PST 2 days ago Earlier examples in this cheat sheet show reasons to use this command. systemctl status also displays information about the service’s activities via log entries that follow the status information. The systemctl status command in this example reports status information about the sshd service. Reports status information about a service. ![]() Calling systemctl is-enabled does not require administrator permissions. If sudo is not used, systemctl enable prompts for the administrator password. The command can be run as a subcommand to sudo. The systemctl enable command requires administrator permissions to execute. The systemctl is-enabled command that follows verifies that the sshd services is enabled. This command can be useful to ensure that users can securely log in from remote systems at any time when the local system is running. The systemctl enable command in this example configures the system to invoke the sshd secure shell service at system startup. To start a service immediately using systemctl, use the systemctl start command, described later. ![]() The enable subcommand does not start the particular service immediately. Enabling a service causes the system to start the service upon reboot or whenever a computer starts up. ![]()
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