Linux

List All Packages Installed by a Specific Repo in CentOS / RedHat with YUM

Red Hat Enterprise Linux (RHEL), Fedora, CentOS and Scientific Linux allows administrators to add and enable multiple repositories [...]

By |2020-07-21T13:51:29-07:00Modified: July 21, 2020January 29th, 2015|Categories: Linux|Tags: , , , , , |0 Comments

CentOS YUM / RPM Error: rpmts_HdrFromFdno / rpmdbNextIterator: Header V3 RSA/SHA1 Signature Key ID BAD

When running YUM or RPM commands, the following errors occurred: error: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID [...]

By |2020-05-20T07:52:09-07:00Modified: May 20, 2020January 29th, 2015|Categories: Linux|Tags: , , |18 Comments

Cannot Retrieve Metalink for Repository: EPEL

When using yum to install or update software packages through "yum install" or "yum update" commands, the following [...]

Create & Migrate Existing Working RedHat / CentOS System to RAID 1 / RAID 10

Linux system has built-in support for software RAID, through MD devices aka Linux Software RAID. Most Linux distributions [...]

By |2021-06-29T23:41:21-07:00Modified: June 29, 2021January 27th, 2015|Categories: Linux|Tags: , , , , , |9 Comments

Sync RHEL / CentOS Server Time with Authoritative Time Server Automatically

In Linux server running Red Hat Enterprise Linux (RHEL) or CentOS, the time of the server may become [...]

By |2021-09-26T02:05:59-07:00Modified: September 26, 2021December 17th, 2014|Categories: Linux|Tags: , , , , |0 Comments

Mail: Command Not Found in Linux (RedHat / CentOS / Debian / Ubuntu)

In Linux operating system such as Red Hat Enterprise Linux (RHEL), CentOS and Ubuntu, the following error may [...]

By |2020-07-26T02:59:32-07:00Modified: July 26, 2020December 7th, 2014|Categories: Linux|Tags: , , , , , , , |5 Comments

Perl Module This Distribution Requires a Working Compiler at Makefile.PL

When compiling and installing a Perl module from source via CPAN or CPANM (CPANMinus) on Linux such as [...]

By |2020-06-15T13:42:39-07:00Modified: June 15, 2020November 11th, 2014|Categories: Linux|Tags: , , , , , , , , , , |0 Comments
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