Yes this is a YouTube but there are nice time series stamps below it. I especially liked: 1.) control-l to clear the screen and 2.) control-r to search history 3.) mount | column -t (both worked on Mac)
With Oracle Linux 8 you just run – because the package comes with # dnf install -y oracle-database-preinstall-21c and then If you want optionally # yum update -y But for non-Oracle dialects like RHEL 8 or CentOS 8 you can download and bang the package in as follows – saves a lot of time curl …
Running oracle-database-preinstall-21c on a RHEL 8 or CentOS 8 Linux flavor Read More »
BTW if XWindows is not loaded on your linux app for RHEL or clones you can go here, download the RPM and do a yum install like this: Another oddity – with Centos8 Gnome DISPLAY is set like this: export DISPLAY=:0 In other words normally for xWindows you do something like this to set your …
XWindows didn’t get installed on your RHEL 8/7 (or clone centos etc). Then do this Read More »
Goto -> Change Settings -> Colours and UNCHECK the 1st three boxes under COLOURS referring to Allow terminal to specify ANSI colours Allow terminal to use xterm 256-colour mode Allow terminal to use 24-bit colours Hope this helps…
Link to comprehensive documentation on how to use ssh without having to provide a password for the remote node everytime How to use ssh-keygen to generate a new SSH key Basically the process is: Generate a public and private key on your server. Do not enter a pass phrase ssh-keygen -t rsa Now copy the …
grep -E -o “\b[a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+\b” filename.txt You can also use egrep instead of grep with the -E switch. egrep -o “\b[a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+\b” filename.txt
It may not be what you think it is. Here is how to check. Anywhere: curl icanhazip.com -4 Windows: Open a browser to the URL: whatsmyip.com Linux: Command Line: curl ifconfig.me For more info on icanhazip.com see: https://major.io/icanhazip-com-faq/
All those hard to read colors in WSL and really any Linux prompts where they have changed the colors – here’s how to turn them off vi ~/.bashrc change any alias’ed commands to color=never change color_prompt=yes to color_prompt=no hint: hit escape <~> to get to the vi command line then: %s/color_prompt=yes/color_prompt=no/g Vi or vim syntax …
default colors set in .bashrc for WSL are annoying to me – ubuntu Read More »
One good way to find out what applications is listening to which interface and on what port is to use netstat You can do this as root: netstat -tlnp
You might think that simply adding to your root path would work. But for Amazon Linux 2 you must add to your /etc/sudoers secure_path variable. For example: secure_path add /usr/local/bin which is conspicuously missing. Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin Becomes: Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin I need this cuz “sudo pip –version” return sudo: pip: command not …