Frequently Asked Questions About Linux / UNIX » service command http://www.cyberciti.biz/faq Every answer asks a more beautiful question. Fri, 03 Feb 2012 22:38:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Debian Linux Install OpenSSH SSHD Serverhttp://www.cyberciti.biz/faq/debian-linux-install-openssh-sshd-server/ http://www.cyberciti.biz/faq/debian-linux-install-openssh-sshd-server/#comments Wed, 11 Jan 2012 13:06:15 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11384 How do I install OpenSSH sshd server under Debian GNU/Linux operating systems?]]> http://www.cyberciti.biz/faq/debian-linux-install-openssh-sshd-server/feed/ 0 Linux / Unix: SysVinit Services Restart vs Reload vs Condrestarthttp://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/ http://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/#comments Thu, 05 Jan 2012 21:24:25 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11349 Can you tell me differences between the following sysvinit /sbin/service command:
service httpd restart service httpd condrestart service httpd reload
]]> http://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/feed/ 0 resolvconf: Error: /etc/resolv.conf must be a symlink Error and Solutionhttp://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/ http://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/#comments Sun, 14 Nov 2010 22:04:24 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9346 When I try to restart my BIND 9 server under Ubuntu Linux using service bind9 restart or service bind9 start command, I get the following error: resolvconf: Error: /etc/resolv.conf must be a symlink How do I fix this problem?]]> http://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/feed/ 1 WordPress Install Memcached Object Cache Plugin To Speed Up Bloghttp://www.cyberciti.biz/faq/linux-unix-bsd-wordpress-memcached-cache-plugin/ http://www.cyberciti.biz/faq/linux-unix-bsd-wordpress-memcached-cache-plugin/#comments Mon, 13 Sep 2010 09:32:59 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8771 How do I install memcached cache plugin under UNIX / Linux to speed up my dynamic database-driven wordpress blog by caching data and objects in RAM to reduce the number of times an external data source must be read? ]]> http://www.cyberciti.biz/faq/linux-unix-bsd-wordpress-memcached-cache-plugin/feed/ 1 Linux Syslogd: Nothing Gets Logged Using /dev/log And /jail/apache/dev/loghttp://www.cyberciti.biz/faq/syslog-fails-to-open-devlog-nothing-gets-logged/ http://www.cyberciti.biz/faq/syslog-fails-to-open-devlog-nothing-gets-logged/#comments Sun, 22 Aug 2010 07:33:19 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8636 I've configured my Apache in chrooted jail at /jail/apache directory. However, my syslogd is not working and nothing gets logged using /dev/log and /jail/apache/dev/log. How do I fix this problem under CentOS 5.x AMD64 with SELinux?]]> http://www.cyberciti.biz/faq/syslog-fails-to-open-devlog-nothing-gets-logged/feed/ 0 Linux incrond inotify: Monitor Directories For Changes And Take Actionhttp://www.cyberciti.biz/faq/linux-inotify-examples-to-replicate-directories/ http://www.cyberciti.biz/faq/linux-inotify-examples-to-replicate-directories/#comments Sun, 18 Jul 2010 00:04:15 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8437 I want to copy (rsync to remote server) a directory tree whenever file uploaded or deleted in /var/www/html/upload/ directory under Linux operating systems for backup purpose and/or load balancing purpose without getting into complex file sharing setup such as NFS or GFS iscsi storage. How do I monitor /var/www/html/upload/ and its subdirectory for new files and executes rsync command to make copy back to www2.example.com:/var/www/html/upload/?]]> http://www.cyberciti.biz/faq/linux-inotify-examples-to-replicate-directories/feed/ 20 Verify: Keepalived IP Failover Working Or Not With tcpdump Commandhttp://www.cyberciti.biz/faq/linux-unix-verify-keepalived-working-or-not/ http://www.cyberciti.biz/faq/linux-unix-verify-keepalived-working-or-not/#comments Thu, 01 Jul 2010 22:09:24 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8021 I've installed keepalived IP failover software as described here. But how do I verify it is working or not?]]> http://www.cyberciti.biz/faq/linux-unix-verify-keepalived-working-or-not/feed/ 2 mod_setenv: Lighttpd Send Custom Headershttp://www.cyberciti.biz/faq/mod_setenv-lighttpd-send-custom-headers/ http://www.cyberciti.biz/faq/mod_setenv-lighttpd-send-custom-headers/#comments Fri, 26 Mar 2010 10:01:15 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6916 How do I add a header to the HTTP request that was received from the client under Lighttpd web server?]]> http://www.cyberciti.biz/faq/mod_setenv-lighttpd-send-custom-headers/feed/ 0 Start / Stop / Restart Apache Web Server Via SSHhttp://www.cyberciti.biz/faq/restart-apache-via-ssh/ http://www.cyberciti.biz/faq/restart-apache-via-ssh/#comments Sun, 14 Feb 2010 13:25:51 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10013 Accessories > Terminal), and then type the following command to login to remote server called server1.cyberciti.biz using the ssh client: $ ssh user@server1.cyberciti.biz Once logged in switch [...]]]> http://www.cyberciti.biz/faq/restart-apache-via-ssh/feed/ 1 Start / Stop / Restart Postfix Mail Serverhttp://www.cyberciti.biz/faq/linux-unix-start-stop-restart-postfix/ http://www.cyberciti.biz/faq/linux-unix-start-stop-restart-postfix/#comments Thu, 03 Dec 2009 18:47:17 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9480 How do I start / stop / restart my postfix mail server under Linux or UNIX operating systems?]]> http://www.cyberciti.biz/faq/linux-unix-start-stop-restart-postfix/feed/ 2 Fedora Linux: Start / Stop / Restart Apache Serverhttp://www.cyberciti.biz/faq/starting-restarting-stopping-apache-server-on-fedora/ http://www.cyberciti.biz/faq/starting-restarting-stopping-apache-server-on-fedora/#comments Sun, 08 Nov 2009 18:40:12 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9221 How do I start / stop / restart the Apache server under Fedora Linux using command line options?]]> http://www.cyberciti.biz/faq/starting-restarting-stopping-apache-server-on-fedora/feed/ 0 Redhat / CentOS Install Memcached Caching Systemhttp://www.cyberciti.biz/faq/rhel-fedora-linux-install-memcached-caching-system-rpm/ http://www.cyberciti.biz/faq/rhel-fedora-linux-install-memcached-caching-system-rpm/#comments Mon, 19 Oct 2009 03:02:43 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=5382 How do I install memcached a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load under CentOS / RHEL / Fedora / Redhat Linux?]]> http://www.cyberciti.biz/faq/rhel-fedora-linux-install-memcached-caching-system-rpm/feed/ 7 Samba: Linux Iptables Firewall Configurationhttp://www.cyberciti.biz/faq/configure-iptables-to-allow-deny-access-to-samba/ http://www.cyberciti.biz/faq/configure-iptables-to-allow-deny-access-to-samba/#comments Fri, 16 Oct 2009 08:48:47 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=5360 How do I configure iptables firewall under CentOS / Fedora / RHEL / Redhat Linux to allow access to the Samba server? How do I open TCP ports # 137, 138, 139 and 445 under Linux so that all Microsoft Windows machine can access files and printer on a Linux host?]]> http://www.cyberciti.biz/faq/configure-iptables-to-allow-deny-access-to-samba/feed/ 2 Linux Determine which Services are Enabled at Boothttp://www.cyberciti.biz/faq/linux-determine-which-services-are-enabled-at-boot/ http://www.cyberciti.biz/faq/linux-determine-which-services-are-enabled-at-boot/#comments Tue, 07 Apr 2009 09:40:50 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=3618 The best protection against vulnerable software is running less software. How do I find out which services are enabled at Boot under CentOS / RHEL / Fedora Linux? How do I disable software which is not needed? ]]> http://www.cyberciti.biz/faq/linux-determine-which-services-are-enabled-at-boot/feed/ 9 Linux Iptables Allow NFS Clients to Access the NFS Serverhttp://www.cyberciti.biz/faq/centos-fedora-rhel-iptables-open-nfs-server-ports/ http://www.cyberciti.biz/faq/centos-fedora-rhel-iptables-open-nfs-server-ports/#comments Thu, 05 Mar 2009 01:42:01 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=3426 The portmapper assigns each NFS service to a port dynamically at service startup time. How do I allow legitimate NFS clients to access the NFS server using RHEL / Fedora / CentOS Linux 5.x iptables firewall?]]> http://www.cyberciti.biz/faq/centos-fedora-rhel-iptables-open-nfs-server-ports/feed/ 18 Red Hat / CentOS: Check / List Running Serviceshttp://www.cyberciti.biz/faq/check-running-services-in-rhel-redhat-fedora-centoslinux/ http://www.cyberciti.biz/faq/check-running-services-in-rhel-redhat-fedora-centoslinux/#comments Wed, 14 Jan 2009 19:48:16 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=3065 Q. How do I list all currently running services in Fedora / RHEL / CentOS Linux server?]]> http://www.cyberciti.biz/faq/check-running-services-in-rhel-redhat-fedora-centoslinux/feed/ 11 PHP Not Accepting <? Tag; Only Accepting <?php and <script> Taghttp://www.cyberciti.biz/faq/php-allow-short_open_tag/ http://www.cyberciti.biz/faq/php-allow-short_open_tag/#comments Mon, 06 Oct 2008 11:29:53 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=1997 Q. I'm using PHP along with latest version of Apache. Only <?php and <script> tags are recognized. Many of my scripts are broken. How do I allow the <? tag also?]]> http://www.cyberciti.biz/faq/php-allow-short_open_tag/feed/ 5 Linux Disable Bluetooth [ Bluetooth Input Devices (hidd) ]http://www.cyberciti.biz/faq/linux-disable-bluetooth-host-controller-interface-daemon/ http://www.cyberciti.biz/faq/linux-disable-bluetooth-host-controller-interface-daemon/#comments Thu, 10 Jul 2008 14:34:10 +0000 Vivek Gite > /etc/modprobe.conf]]> http://www.cyberciti.biz/faq/?p=4456 How do I disable bluethooth support (including bluethooth based devices) under Linux operating systems?]]> http://www.cyberciti.biz/faq/linux-disable-bluetooth-host-controller-interface-daemon/feed/ 4 Linux Verify crond Daemon And Cronjobs Are Runninghttp://www.cyberciti.biz/faq/howto-check-cronjob-is-running-not/ http://www.cyberciti.biz/faq/howto-check-cronjob-is-running-not/#comments Sun, 08 Jun 2008 13:13:42 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=1067 http://www.cyberciti.biz/faq/howto-check-cronjob-is-running-not/feed/ 2 CentOS / Red Hat Linux Install VSFTPD FTP Serverhttp://www.cyberciti.biz/faq/rhel-centos-linux-install-ftp-server/ http://www.cyberciti.biz/faq/rhel-centos-linux-install-ftp-server/#comments Mon, 12 May 2008 19:35:37 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=1068 http://www.cyberciti.biz/faq/rhel-centos-linux-install-ftp-server/feed/ 10