Command Description # rpm -ivh [package.rpm] install a rpm package # rpm -ivh --nodeps [package.rpm] install a rpm package ignoring dependencies requests # rpm -U [package.rpm] upgrade a rpm package without changing configuration files # rpm -F [package.rpm] upgrade a rpm package only if it is already installed # rpm -e [package] remove a rpm package # rpm -qa show all rpm packages installed on the system # rpm -qa | grep httpd show all rpm packages with the name "httpd" # rpm -qi [package] obtain information on a specific package installed # rpm -qg "System Environment/Daemons" show rpm packages of a group software # rpm -ql [package] show list of files provided by a rpm package installed # rpm -qc [package] show list of configuration files provided by a rpm package installed # rpm -q [package] --w...
What is RAID? RAID stands for "Redundant Array of Independent Disks". It allows multiple physical hard drives to be used as one device. There are many different types or "levels" of RAID for different purposes. Can I use it? RAID capabilities are considered essential for most server-class computers and are widely implemented on servers. But there is no reason that RAID cannot be used on more basic PCs as well. Any computer capable of supporting more than one hard-disk can use RAID. Why Might I Want it? RAID capabilities can provide several benefits: Redundancy -- If one disk fails, one or more others have the same data and can prevent data loss until the failed drive is replaced. Performance -- Data can be written to more than one drive at a time, improving overall transfer rates. Convenience -- The space from several physical disks can be addressed as though it were single device. This can ...
A wildcard is a character that can be used as a substitute for any of a class of characters in a search, thereby greatly increasing the flexibility and efficiency of searches. Wildcards are commonly used in shell commands in Linux and other Unix-like operating systems . A shell is a program that provides a text-only user interface and whose main function is to execute commands typed in by users and display their results. Wildcards are also used in regular expressions and programming languages. Regular expressions are a pattern matching system that uses strings (i.e., sequences of characters) constructed according to pre-defined syntax rules to find desired strings in text. ? (Question Mark) * (Asterisk) [ ] (Brackets) - (Hyphen) ~ (Tilda) Standard wildcards are used by nearly any command (including mv, cp, rm and many others). ? (question mark) this can represent any single character. If you specified something at the command...
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