daemon HowTo - Linux / Unix Q & A from nixCraft

Reload Squid Proxy Server Without Restarting Squid Daemon

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

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

in Linux, UNIX last updated January 5, 2012

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

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

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

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

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?

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

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 )

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

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

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

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?