Yum

Useful commands:

repoquery -i itcl - tells which repository contains itcl package

To remove package:

yum --setopt=tsflags=noscripts remove <package>

Sometimes it is useful to delete some files:

rm -f /var/lib/rpm/__db.*

On CensOS on VTP, it was some problem:

Hi Bryan,

on yum updates, I tried

  [base]
  name=CentOS-$releasever - Base
  baseurl=http://vault.centos.org/altarch/$releasever/os/$basearch/

and it gives me this:

  http://vault.centos.org/altarch/7/os/armhfp/repodata/repomd.xml: [Errno 14] HTTPS Error 301 - Moved Permanently
  Trying other mirror.

If I change 'http:' to 'https:' it gives me this:

  https://vault.centos.org/altarch/7/os/armhfp/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's certificate issuer has been marked as not trusted by the user."
  Trying other mirror.

I added key

 sslverify=0

on the next line after https:... and yum seems updating now, will see.

Sergey