daemon HowTo - Linux / Unix Q & A from nixCraft

Reload Squid Proxy Server Without Restarting Squid Daemon

last updated March 31, 2017 in CentOS, Debian / Ubuntu, FreeBSD, Linux, RedHat and Friends, Squid, Suse, UNIX

I made some changes to the /etc/squid/squid.conf file and issued the command /sbin/service squid restart. However, this command takes way too much time to restart the server. How do I tell squid to just reread the config file and apply new changes under Linux operating systems?

Linux / Unix: SysVinit Services Restart vs Reload vs Condrestart

last updated January 5, 2012 in Linux, UNIX

Can you tell me differences between the following sysvinit /sbin/service command:

service httpd restart
service httpd condrestart
service httpd reload

Linux Syslogd: Nothing Gets Logged Using /dev/log And /jail/apache/dev/log

last updated August 22, 2010 in Apache, CentOS, Linux, RedHat and Friends, SELinux

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?

CentOS / Redhat Linux: Install OpenNTPD To Synchronize The Local Clock

last updated November 22, 2016 in CentOS, Fedora Linux, Linux, Package Management, RedHat and Friends

OpenNTPD is a Unix system daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers. How do I install OpenNTPD under CentOS / RHEL / Fedora Linux instead of default NTPD client / server?

What Is Tux Web Server and How do I Use it?

last updated April 30, 2008 in Apache, CentOS, Lighttpd, RedHat and Friends, Security, Suse

Can you explain the tux web server and its usage against regular apache httpd web server?

Remove Shutdown and Reboot Option from Linux GUI Login Screen ( GDM Setup )

last updated January 15, 2008 in CentOS, Debian / Ubuntu, Gnome, Linux, Solaris-Unix, Suse, Ubuntu Linux

Q. I’ve a central Linux test server. It has GDM based GUI login screen. How do I remove both shutdown and reboot server options from the login screen?
Continue reading “Remove Shutdown and Reboot Option from Linux GUI Login Screen ( GDM Setup )”

Linux / UNIX: Find out or determine if process pid is running

last updated June 27, 2015 in CentOS, Debian / Ubuntu, FreeBSD, HP-UX Unix, Linux, RedHat and Friends, Solaris-Unix, UNIX

How do I find out my process is running on a Unix-like operating systems? How do I get the pid number for particular process on a Linux operating systems using bash shell?