166 FAQ tagged "Linux"

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Linux Software RAID - Failed to RUN_ARRAY /dev/md0 invalid argument Error and Solution
Explains how to fix Linux software RAID when RAID metadata is lost or is no longer consistent.
Squid Proxy WARNING! Your cache is running out of filedescriptors error and solution
I’ve Squid Proxy server with over 100 Windows workstation. I see following error message in my cache.log file - “WARNING! Your cache is running out of filedescriptors”. Do I need to filter proxy server requests to avoid this problem? How do I fix this problem under CentOS / Fedora / RHEL / Debian Linux?
Force yum update Command To Exclude Certain Packages
How can I exclude selected packages when I rum yum update command under CentOS Linux server?
Monit: Monitor BIND 9 (named) Name Server and Auto Restart SSH If It Does Not Respond

How do I monitor my BIND 9 (named) server with monit which is chrooted at /var/lib/named directory? How do I restart bind (named) server if it does not respond or dead due to any issues under Debian / Ubuntu Linux?
Linux tar: /dev/st0: Cannot write: Invalid argument error and solution
Q. When I run tar command it fails with an error that read as follows:
tar: /dev/st0: Cannot write: Invalid argument
How do I fix this error under CentOS / Debian / Fedora / RHEL Linux HP server systems?
Linux / UNIX View Only Configuration File Directives ( uncommented lines of a config file )
Most Linux / UNIX configuration files are documented using comments, but some time I just need to see line of configuration text in a file. How can I view just the uncommented configuration file directives from squid.conf or httpd.conf file?
Best Method To Reboot Remote Linux / Windows / UNIX Server
Q. I’ve couple of Linux / Windows server hosted in remote data center? My ISP provides following option for rebooting the box:
a) Graceful shutdown command
b) An IPMI reboot
c) A power strip
Which one is the best way to reboot server and why?
How do I know When I Need To Update My Linux System Software?
How do I know when I need to update my Linux system? How do I know new patches are available for CentOS Linux (Red Hat) / Debian Linux server system?
Ubuntu Linux Configure Gateway / Default Routing IP Address
How do I configure default router or gateway IP address under Ubuntu Linux / Debian Linux? How do I change default router / gateway IP under Ubuntu Linux?
How To Find Apache Document Root

Q. How do I find out my Apache webserver document root under Linux / UNIX / BSD operating systems?