Step-by-step Postfix and Dovecot mail server setup for RHEL 9/10, AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream: TLS, SASL submission on 587, IMAPS, LMTP delivery, verification and troubleshooting.
Create Message Of The Day Startup Banner CentOS To create a custom start-up message that displays after login, do the following: Open a terminal session, and elevate privileges to root…
Configure an AlmaLinux 10 machine as an MIT Kerberos client: krb5.conf with primary and replica KDCs, a host keytab, SSSD Kerberos password logins and passwordless SSH with GSSAPI.
Configure Citrix ICA Client CentOS 6 Configure Citrix ICA Client CentOS 6 This one is beautiful. Nothing like removing Windows from the entire process of working from home, or just…
Configure CUPS Web Interface for SSL CentOS 6 Configure CUPS Web Interface for SSL CentOS 6 In this scenario, we already have CUPS configured on CentOS6, but we want to…
Configure wget to use a proxy server CentOS Configure wget to use a proxy server CentOS If you have a proxy between you an the internet, this is a common…
Step-by-step Clonezilla guide to image or clone a hard drive to disk, network share, SSH, or NFS—free Ghost/True Image alternative.
Fix LDAP error 32 (no such object) and empty ldapsearch -x results on CentOS 6 after slapd 2.4.23 config and database changes.
Reset an LDAP user password from the command line with ldappasswd—basic syntax, bind DN, and tips for scripting directory resets.
Use ldd to list shared library dependencies for a Linux binary—quick root examples under /sbin and how to read the output.
