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2075 articles
How to create Self-Signed CA Certificate with OpenSSL
Learn how to generate a ca certificate and how to sign a certificate using openssl. Steps to create certificate authority CA and CSR with openssl
OpenSSL create Certificate Chain [Root & Intermediate CA]
Steps to create root and intermediate CA certificate and combine them to openssl create certificate chain. Openssl verify certificate chain (CA bundle)
OpenSSL create Client Certificate & Server Certificate with Example
Steps to create client certificate and server certificate using your own Certificate Authority chain (CA bundle) and configure Apache with SSL (HTTPS)
Create SAN Certificate | OpenSSL generate CSR with SAN command line
Create SAN certificate using openssl generate csr with san command line. Openssl sign CSR with Subject Alternative Name. openssl add san to existing certificate …
10 easy steps to setup High Availability Cluster CentOS 8
Step-by-Step Guide to setup Linux High Availability Cluster in CentOS 8 using system_id_source uname. Configure pacemaker, corosync and linux HA cluster.
Automate SFTP using shell script with password in Linux/Unix
Steps to automate SFTP using shell script with password and expect with examples SFTP command example in Unix shell script with passwordless authorized_keys
Linux sftp restrict user to specific directory | setup sftp chroot jail
how to configure sftp server in linux step by step to sftp restrict user to specific directory in Linux Setup sftp chroot jail with authorized_keys passwordless …
Linux lvm snapshot backup and restore tutorial RHEL/CentOS 7/8
Step by step guide linux lvm snapshot backup and restore with examples RHEL/CentOS 7/8. Create, merge, extend, remove LVM snapshot. backup root file system
6 easy steps to setup offline two factor authentication in Linux
Configure Google Authenticator with Offline two factor authentication to secure ssh, sudo and su using PAM module pam_google_authenticator.so in RHEL/CentOS 7/8 …
5+ practical examples to learn sticky bit in Linux
What is Unix or Linux Sticky Bit special permission. How to apply sticky bit for directories and files. What is the difference between small 't' and capital "T" …
Tutorial: Beginners guide on Linux Memory Management
Understand various terminologies with linux memory management, dirty page, swapping, inactive, active memory, Translation Lookaside Buffers (TLB), page cache
How to PROPERLY Open Port in RHEL/CentOS Linux
Examples to open port in linux RHEL/CentOS 7/8 Use netstat to check port status. centos open firewall port. how to open and close ports. check if port is open
5 easy steps to resize root LVM partition in RHEL/CentOS 7/8 Linux
Steps to resize root LVM partition. Increase or decrease root logical volume partition size with examples in RHEL/CentOS 7/8 Linux. Extend or shrink root LVM
Solved: Error populating transaction, retrying RHEL/CentOS 7/8
How to fix starting package installation process error populating transaction, anaconda is retrying faced during RHEL/CentOS 7/8 installation in Linux
How to Compare Strings in Bash
How to compare strings in shell script in Linux and Unix. perform regex and pattern match or strings and sub strings. Learn about different comparison operator