Somewhere in an alternate universe, Unix was developed by a team of cats. They called it "Meow-ix," and its command-line interface was all written in purrfectly elegant feline scripts! 😸🐾

You can press up-arrow or down-arrow to walk through a list of previous commands in most modern shells like Bash, ZSH, TCSH, FISH and others.

What does /proc/sys/kernel/poweroff_cmd say on your Linux machine? It should print the default poweroff command path, but users can change this to another command. Sysadmins customize the poweroff process by changing this string to a custom script or command. See https://www.cyberciti.biz/faq/howto-shutdown-linux/ for more info.

Want to avoid receiving empty emails from the #Linux, #FreeBSD, or #Unix cron job? Set the MAILTO variable before the job. For instance: MAILTO="" # turn it off 40 12 1 * * /path/job1 MAILTO="foo@example-com" # send output here 10 4 * * * /path/job2 See https://www.cyberciti.biz/faq/disable-the-mail-alert-by-crontab-command/ and https://www.cyberciti.biz/faq/linux-unix-crontab-change-mailto-settings/ for more info.

Is there anything else you require aside from Prometheus and Grafana? Unless you are working at a scale similar to Google, Amazon, or Apple, these should be adequate. In my opinion.

CVE-2023-38408: Remote Code Execution in OpenSSH's forwarded ssh-agent www.qualys.com/2023/07/19/cve-2023-38408/rce-openssh-forwarded-ssh-agent.txt #unix #linux #security #infosec

Red Hat refuses Alma's CVE patches to CentOS Stream; says "no customer demand https://www.reddit.com/r/AlmaLinux/comments/1544w8b/red_hat_refuses_almas_cve_patches_to_centos/ #linux #rhel #AlmaLinux

How To Set Up a Firewall with UFW on Debian Linux 12 https://www.cyberciti.biz/faq/set-up-a-firewall-with-ufw-on-debian-12-linux/ #debian #linux #sysadmin #security

If you think Twitter is going to /dev/null, well, take a look at popular subreddits like https://www.reddit.com/r/videos/ (NSFW link). It is just a disaster, a complete failure. How can current management allow getting things this bad at Reddit? Perhaps the intention is to deliberately create a poorly functioning site, causing frustration among users to the point where it becomes abandoned and can eventually be shut down.

me after upgrading Debian Linux to v12 from v11 https://www.cyberciti.biz/faq/update-upgrade-debian-11-to-debian-12-bookworm/

Several AI companies attempt to appear trendy by publishing their AI source code, but they are often driven by greed and not progress for humanity. They set unreasonable limitations on licensing and still claim it as open source. However, who are they trying to deceive? It's only a matter of time before some youngsters or old-timers develop a genuine code in their garage and donate it to the Apache Foundation as real open-source AI licenses.

If Rust is so secure and awesome, why haven't GNU or BSD utils been rewritten in Rust Lang?

How to set up a firewall using FirewallD on #OpenSUSE #Linux https://www.cyberciti.biz/faq/set-up-a-firewall-using-firewalld-on-opensuse-linux/ #sysadmin #opensource

Print your public IP address from Linux, macOS, FreeBSD or Unix/Windows shell: curl https://checkip.amazonaws.com Try dig dig -4 TXT +short o-o.myaddr.l.google.com @ns1.google.com dig -6 TXT +short o-o.myaddr.l.google.com @ns1.google.com See https://www.cyberciti.biz/faq/how-to-find-my-public-ip-address-from-command-line-on-a-linux/ for more.

Did you know? The “ping” command, commonly used to test network connectivity, was developed by Mike Muuss in 1983 for BSD Unix and later became standard in Linux and other operating systems such as Windows and others. Check his Wikipedia page

Mike Muuss - Wikipedia

and my page about ping command https://www.cyberciti.biz/faq/unix-ping-command-examples/ examples for more info. #linux #unix #macos #freebsd #history #opensource

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developer spotted in wild 😂

How to check TLS/SSL certificate expiration date from command-line https://www.cyberciti.biz/faq/find-check-tls-ssl-certificate-expiry-date-from-linux-unix/ #linux #unix #macos #freebsd #opensource

Can you guess what went wrong? ``` ping ec2.app-in-mum-49 ``` Here is what I get: PING ec2.app-in-mum-49 (23. xx. xxx .xxx) 56(84) bytes of data. From 10.204.35.30 (10.204.35.30) icmp_seq=6 Time to live exceeded From 10.204.35.30 (10.204.35.30) icmp_seq=6 Time to live exceeded .... ..