How to change sshd default port on firewalld

  Instead of messing around with the ports directly with RHEL7/CentOS7 firewall-cmd, I’ve decided to update the port number in the ssh.xml service file instead. Think it’s cleaner this way. For example, here are the steps to change sshd port from the default 22 to 9876: 1. Make a copy of the default ssh service… Continue reading How to change sshd default port on firewalld

htop shows blank screen

Argh! My htop is showing a blank screen. I’m afraid of the dark…helppp! Solution: export TERM=xterm-color before running htop My tmux uses TERM=screen and htop didn’t like it on one particular machine while the others are fine. Setting it to the above solves it.

How to determine which repo a RHEL/CentOS package belongs to

I thought this command should show me which repo the package ‘htop’ belongs to, but I was wrong: [root@server ~]# yum info htop Loaded plugins: rhnplugin, security Installed Packages Name : htop Arch : x86_64 Version : 0.8.3 Release : 1.el5 Size : 136 k Repo : installed Summary : Interactive process viewer URL :… Continue reading How to determine which repo a RHEL/CentOS package belongs to

Fix outdated/corrupted EPEL repo metadata

yum update failed in RHEL (Red Hat Enterprise Linux) server 5.5 with EPEL repo added: [root@server ~]# yum update Loaded plugins: rhnplugin, security Skipping security plugin, no data Setting up Update Process Resolving Dependencies Skipping security plugin, no data –> Running transaction check —> Package cups.x86_64 1:1.3.7-18.el5_5.8 set to be updated —> Package cups-libs.i386 1:1.3.7-18.el5_5.8 set… Continue reading Fix outdated/corrupted EPEL repo metadata