Best regards,
George Machitidze
On Tue, Oct 9, 2012 at 4:35 AM, George Machitidze <giomac@xxxxxxxxx> wrote:
HiI don't think this is right place, the best you can do is check rpm docs at rpm.org (very extensive docs a and books)If you want to be a packager - you have to check Fedora packaging guidelines:But I'll answer you anyway:At first, you have to understand and separate backend and frontend:rpm, dpkg - package manager backends and libraries for operating on DB populated with current situation, not the reposyum, apt - package manager frontends with databases related to repository and upgrade operationsDo not confuse yum/apt with rpm/dpkg.RPM is using sqlite database populated in /var/lib/rpm/, you should never operate on it directly. rpm, rpm libraries and yum utilities provide interface for you to manage packages, there is no reason to touch DB manually.1) RPM doesn't use plaintext database2) /var/cache/yum/3) yum search MY_PACKAGE (will update cache), or yum search -C MY_PACKAGE (run entirely from system cache, don't update cache)4) --skip-broken skips broken packages, dependencies are always solved automatically5) yum update, usually cache is always update, unless -C is specified. /var/lib/yum, /var/cache/yum6) yum doesn't operate on it's own configuration files, yum will need to create repo file in /etc/yum/repos.d as xxx.repo like:[somerepo]name=cdrom filesbaseurl=file:///mnt/cdrom
7) Doesn't need it actually, this is handled by rpm backend. rpm leaves any changed (checked with md5) configuration files with .rpmsave filename extension. rpm knows which files are configuration files.8) yum whatprovides "/path/file"9) rpm -qa
Best regards,
George Machitidze
On Tue, Oct 9, 2012 at 3:45 AM, Mohsen Pahlevanzadeh <mohsen@xxxxxxxxxxxxxxxxx> wrote:Dear all,
I have more question on comparison of YUM and APT:
1) in apt systems, /var/lib/dpkg/status exists and keeps information
about installed packages such as marked as remove and etc, what's its
equivalent in yum systems?
2) in apt systems, /var/cache/apt/archives keeps *deb files as
temporarily, What's its equivalent in yum systems?
3) apt-cache command search on local cache about a package such as
'apt-cache search MY_PACKAGE', now can i do it with yum systems? if true
which command?
4) apt-get has -f (--fixed-broken), yum does has it? such as 'apt-get -f
install' ? when you use 'apt-get -f install' or 'apt-get -f
dist-upgrade' APT system resolve installed packages and solve any
problem.
5) in apt systems at first we use 'apt-get update' to download
information of packages.Then they are cached in /var/lib/apt/lists/ ,
What's equivalent of apt-get update and /var/lib/apt/lists/ ?
6) We use 'apt-cdrom add' to add cdrom repo to my machine, What's its
equivalent in yum?
7) --purge and -e is different in dpkg or apt-get purge or apt-get
reomve, Do you have same concept in yum?(remove doesn't remove
information in status file, but purge remove them)
8) we have apt-file command that it search on repo and get a file as arg
and returns package names that arg exist in them.Do you have in yum?
9) /var/lib/dpkg/available : list of installed packages.
--thank you,
Mohsen
On Sat, 2012-10-06 at 06:54 -0500, Rex Dieter wrote:
> On 10/06/2012 12:40 AM, Mohsen Pahlevanzadeh wrote:
> > Dear Matthew and Christopher,
> >
> > At first, sorrry for late, and thank you for your reply and your
> > attention.
> > In Debian systems:
> > Directory /var/lib/apt/ keeps cache of repos, then users can search
> > offline with apt-cache search blahblah , What's this scenario in yum
> > system? and Where the given directory ?
>
> /var/cache/yum
>
> Use
> yum -C
> or
> yum --cacheonly
>
> -- rex
>
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