First install the EPEL-repositories then install the X Window System yum -y install epel-release yum -y groupinstall “X Window system” Install the MATE packages. This will take a few minutes yum -y groupinstall “MATE Desktop” Tell your system to start … Continue reading →
nmcli dev wifi nmcli -f ALL dev wifi For more information see here
Continue reading →Problem: You go to install a package with yum command on CentOS and you get the error saying that “Another app is currently holding the yum lock; waiting for it to exit… The other application is: PackageKit”. PackageKit get launched … Continue reading →
Problem: xfreerdp starts up with the following messages [14:51:24:005] [14065:14066] [ERROR][com.freerdp.core.update] – [0x03] Cache Glyph – SERVER BUG: The support for this feature was not announced! Use /relax-order-checks to ignore [14:51:24:005] [14065:14066] [ERROR][com.freerdp.core.update] – order flags 03 failed [14:51:24:005] [14065:14066] … Continue reading →
Updating or installing Dell’s srvadmin package and you got this: warning: /var/cache/yum/x86_64/7/dell-system-update_dependent/packages/srvadmin-omilcore-9.1.0-3013.13047.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 34d8786f: NOKEY Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Dell-DSU The GPG keys listed for the “dell-system-update_dependent” repository are already installed but they are not correct … Continue reading →
I had to install AnyConnect 3 on my Centos machine (yes, I know, it is long past end of life – but sometimes you have to take one step back to take two steps forward) and when I launched it … Continue reading →
I have found the following two sites helpful in finding issues with the configuration of SSL secured web sites https://ssltools.digicert.com/checker/ https://www.ssllabs.com/ssltest/analyze.html Test which ciphers (TLS, SSL, etc) are enabled nmap -sV –script ssl-enum-ciphers -p 443 www.yourdomain.com Ref: https://nmap.org/nsedoc/scripts/ssl-enum-ciphers.html
Continue reading →You set up a machine – but you set the wrong timezone, how to fix it? First confirm the current timezone [root@mysystem ~]# date Mon Jun 3 09:08:58 CDT 2019 We will use the tool timedatect to change it. Now … Continue reading →
I have had some problems with kernels, modules, drivers, services, etc causing Centos to lock up when the system boots. This is real annoying when it has that nice fancy graphical grey screen up with the spinning device at the … Continue reading →
First su – yum -y install tftp If you are running iptables either: iptables -I INPUT -s ip.address.tftp.server -p udp -m udp –dport 2000:2020 -j ACCEPT 0r systemctl stop iptables If you are running firewalld Execute the command to permit … Continue reading →