If you want to concatenate them with a logical OR then we must use the [OR] operator
When you install Apache HTTP on CentOS, mod_filter is not enabled by default then if you try to use some of its directives an error like this is raised: "Invalid command 'FilterDeclare', perhaps misspelled or defined by a module not included in the server configuration", so to resolve the above error is enough to add the following line to the httpd.conf.
APC is a cache system which stores compiled PHP code, also allows to store user data allowing the web server to serve a greater number of requests per second, it's a worth noting that a wrong configuration of it can slow the response process, so it is important to adjust the cache parameters until finding the proper performance.
To upgrade to PHP 5.3. x on CentOS follow the following steps
- Update CentOS
# yum update
XFS is a high-performance 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993. It was the default file system in the SGI’s IRIX operating system starting with its version 5.3; the file system was ported to the Linux kernel in 2001, currently is the default file system in CentOS 7.
xfs_growfs allows to enlarge in hot a partition with XFS file system
I have made some modifications to my RHEL/Fedora/CentOS, Debian/Ubuntu operating system and now it does not restart. How can I make a recovery / rescue operation?