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--- lx103:managing_software [2024/04/27 19:28]
114.119.137.174 old revision restored (2024/04/05 09:09)
+++ lx103:managing_software [2024/05/14 13:13] (current)
114.119.149.71 old revision restored (2023/12/22 10:22)
@@ Line 1: / Line 1: @@
-====== RPM ======
+======Package Management======
+Is controlling software (Packages) in a Linux environment.
+----
+**RPM / YUM / DNF** tools are used on
+  *Redhat
+  *CentOS
+  *Fedora
+  *Suse
+**apt-get / dpkg** tools are used on
+  *Debian
+  *Ubuntu
+  *Mint
+===== RPM =====
 Redhat Package Manager -- now recursive -- RPM Package Manager -- after being adopted by multiple distros.
+Package file naming conventions (NOT A REQUIREMENT):
+  * //packagename-a.b.c-x.arch.rpm//
+    * **Package Name** - name of package, like.. samba
+    * **Version Number** - (a.b.c) this is the package version number like 3.6.5 -- the programmer assigns this number.
+    * **Build Number** - number following version number (x) represents minor changes (patches, tweaks) made by package container.
+    * **Architecture** - Defines the architecture the package was made to run on. i386 is common. there are further archs like: i586, i686, x86_64, PPC, noarch(scripts)
 Operators:
-  * -i -- Install
+  * **-i** -- Install
-  * -U -- Upgrade if already installed
+  * **-U** -- Upgrade if already installed
-  * -q -- Query, get info about packages
+  * **-q** -- Query, get info about packages
+===== DEB =====
+====apt-get====
+You can edit sources in /etc/apt/sources.list
+<code>
+deb     http://http.debian.net/debian wheezy         main
+deb-src http://http.debian.net/debian wheezy         main
+deb     http://security.debian.org/   wheezy/updates main
+deb-src http://security.debian.org/   wheezy/updates main
+</code>
+deb entries specify debian PACKAGES where as deb-src specifies SOURCE PACKAGES, upon which to compile a package/program.
+Useful commands:
+  *apt-get update
+=====CENTOS=====
+  *Uses yum/rpm.
+  *Repos listed in **/etc/yum.repos.d/**
+====rpm====
+  *-ivh //packagefile// - Installs //packagefile// with a series of hashes as indicators.
+  *-uvh - Same as -ive but upgrades a a package if already installed?
+  *-q //pkgname// - Queries to see if //packagename// is installed.
+  *-e //pkgname// - remove //pkgname// from system.
+====yum====
+  *yum makecache fast - updates local cache of repo contents. Similar to Pacman -Syy
+  *yum search //name// - searches repos for pkgs named //name//
+  *yum install //httpd// - installs //httpd// and deps from repos.
+  *yum update -- updates all packages on system.
+=====UBUNTU=====
+----
+uses apt-get / dpkg
+====apt====
+Config file located in ///etc/apt///sources.list important. sources.list.d folder contains official repos.
+  *apt-get update -- updates repo list. DOES NOT UPGRADE.
+===apt-cache===
+  ***search** //thing// -- searches packages on local package cache for //thing// to download from server.
+  ***stats** -- shows stats based on the metadata downloaded about our repos.
+  ***depends** apache2 -- shows dependencies for the apache2 package.
+  ***unmet** -- shows pkgs that have unmet depends.
+  *apt-get install //apache2// - install apache2 + deps from repos.
+  *apt-get upgrade -- upgrades out of date packages.
+  *apt-get clean -- cleans up local pkg files, temp files, etc.
+  *apt-get autoclean -- only cleans out packages that are no longer avail in our source repo. These can no longer be downloaded and are largely useless files.
+  *apt-get install -s php5 -- -s says simulate install php5. useful!
+  *apt-get install -y php5 -- will auto input YES on prompts.
+  *apt-get install -y -q php5 -- -q omits some terminal output.
+  *apt-get source php5 -- this will download the source files php5 and not the PACKAGE php5.
+  * **apt-get dist-upgrade** -- RTFM, performs upgrade but also handles changing of dependencies of new versions of a package. As a result, some packages may be removed.

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