fedora

I‘ve recently started to use FreeBSD operating system with tcsh (c shell clone) shell. I noticed that both set and setenv command set shell user environment. What’s the difference between the SET and SETENV commands?

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How do I install nmon command under Linux operating systems to find out performance information for my CPU, memory, network, disk, virtual memory, top process and other part of my HP server running on Debian Linux or CentOS Linux 6.x amd64 bit server?

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I‘m running PHP version 5.3.3 on CentOS / RHEL 6.x with APC php-pecl-apc-3.1.9. However, I’m getting the following warnings in my php server log file:

[01-Jul-2012 10:50:49] PHP Warning: require_once(): Unable to allocate memory for pool. in /var/www/html/includes/admin.php on line 57
[18-Jul-2012 17:00:08] PHP Warning: include_once(): Unable to allocate memory for pool. in //var/www/html/includes/xmlrpc.php on line 55
[18-Jul-2012 17:00:40] PHP Warning: require(): Unable to allocate memory for pool. in /var/www/html/includes/geshi.php on line 2307

How do I fix these php warnings?

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I‘ve downloaded Firefox version 14.0.1 from mozilla ftp server. The name of file is firefox-14.0.1.tar.bz2. How do I install firefox in any Linux distribution?

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I know wget command can resume downloads. H>ow do I resume partially transferred files using rsync command line under Unix like operating systems?

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I‘ve downloaded Firefox version 13.0 from mozilla server. The name of file is firefox-13.0.tar.bz2. How do I install firefox-13.0.tar.bz2 in any Linux distribution?

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I‘m a home user and how do I install VirtualBox virtualization software for my home use under Debian Linux 6 operating systems?

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