sync

I‘m a new Linux sys admin and I’m unable to find the command to list all users on my RHEL server. What is the command to list users under Linux operating systems?

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How can I stop the flushing of mmaped pages to disk in Linux?

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Q. I’ve configured BIND named TSIG as documented here. It worked for some time, but my /var/log/messages got the errors as follows:

zone example.org/IN: refresh: failure trying master 71.22.11.22#53 (source 0.0.0.0#0): clocks are unsynchronized: 9 Time(s)
zone example.org/IN: refresh: failure trying master 71.22.11.22#53 (source 71.22.11.22#0): clocks are unsynchronized: 9 Time(s)

How do I fix these errors under Debian Linux 64 bit etch server?

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Q. Under FreeBSD 7.0 patch level 5, I’m getting following warning message:

Enabling pf.
No ALTQ support in kernel
ALTQ related functions disabled
No ALTQ support in kernel

I need ALTQ support for my FreeBSD box. How do I enable ALTQ for Class Based Queuing (CBQ) to divide a connection’s bandwidth into different classes or queues to prioritize traffic based on filter rules?

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Q. How do I use rsync command to back up a home directory under Linux operating system? A. rsync command easily backup your home directory to local secondary hard disk or remote server using ssh protocol. rsync is a software application for Unix systems which synchronizes files and directories from one location to another while […]

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Q. How do I boot my Ubuntu Linux server into Rescue mode to fix system? A. You can boot Ubuntu Linux into rescue mode when things go wrong, there are several ways to work on fixing them. However, you must understand your system and what to fix in case of emergency. Use this mode only […]

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