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Firewalld Cheat Sheet
Notes and Tips To list all services firewalld is aware in an easy to read format use command firewall-cmd –get-services | tr ” ” “\n” Default firewalld service .xml files can be found under /usr/lib/firewalld/services For all commands that support the –zone= option if no zone is provided it will use the default zone. To make changes persistent add […]
Create Permanent alias on CentOS/Redhat
The ‘alias’ command in CentOS allows for you to create an alias to a command. For example, if you want to use the vim text editor, but are used to typing vi file-to-edit.txt, you can create an alias to automatically start vim instead of vi when typing the command. Showing current aliases To show the […]
Adding a New Disk Drive to a CentOS 6 / 7 System
Finding the New Hard Drive in CentOS # ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sdb Creating Linux Partitions # su – # fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0xd1082b01. Changes will remain in memory only, until you decide […]