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Mtty command line screen position
Mtty command line screen position







mtty command line screen position
  1. #Mtty command line screen position how to#
  2. #Mtty command line screen position update#
  3. #Mtty command line screen position archive#
  4. #Mtty command line screen position software#

She was talking to the person on the phone. One time there was a database issue she was debugging. My mom fixes databases and other problems. I think my favourite story is something that your (Jose’s) story reminds me of. That’s a pretty funny story (and thing to call you sure it’s at your expense but it’s not really that mean, and its more clever). Sounds like my mom’s office (telecommunication). Nor could I copy it (cp uses /usr/lib).Īn “Ohnosecond” is defined as the period of time between when you hit enter and you realize what you just did. Did you know the “mv” command uses libraries in /usr/lib? I found that out the hard way when I discovered I could not move it back to its original pathname. Lastly, I once had an accidental copy & paste, which renamed (mv) /usr/lib. As soon as my head hit the pillow, the phone rang. It was still in / – removing any files older than 3 days old! I restored the filesystems and went home to get some sleep, thinking I would investigate root cause after I had some rest. The cd into the log file directory didn’t work, but the cron job kept going. About a year later, someone removed the directory. It was to clean up the log files of some program they had. The server had a cron job that ran, as root, that cd’ed into a directory and did a find, removing any files older than 3 days. This, of course, includes “.” – recursively. I once had a bunch of dot files I wanted to remove. Mistakes are the inevitable, so have you made any mistakes that have caused some sort of downtime? Please add them into the comments section below. This also applies to day today jobs such as creating the users and more.

mtty command line screen position

#Mtty command line screen position software#

  • Use your well tested perl / shell scripts and open source configuration management software such as puppet, Ansible, Cfengine or Chef to configure all servers.
  • Wait and read command line twice before hitting the dam key.
  • Use CVS/git to store configuration files.
  • mtty command line screen position

    Create a snapshots using rsync or rsnapshots. Never use rsync with single backup directory.

    #Mtty command line screen position archive#

    (see Torture-testing Backup and Archive Programs paper).

  • The clear choice for preserving all data of UNIX file systems is dump, which is only tool that guaranties recovery under all conditions.
  • ConclusionĪll men make mistakes, but only wise men learn from their mistakes - Winston Churchill.įrom all those mistakes I have learn that: One day ORDB was re-activated and it was returning every IP address queried as being on its blacklist.

    #Mtty command line screen position update#

    But, I failed to update my Postfix RBL settings. The end result – a few visitors went to /dev/null:Įcho 'foo 86400 IN CNAME ' > & rndc reload Failed To Update Postfix RBL Configuration I wanted to shutdown my local Fedora desktop system, but I issued halt on remote server (I was logged into remote box via SSH):Ĭreated a wrong DNS CNAME entry in zone file. (now I use firewall reset script to avoid lockdowns). I had to call remote data center tech to reset firewall settings. After a quick kernel upgrade, I had rebooted the box. I made changes to sshd_config and changed the ssh port number from 22 to 1022, but failed to update firewall rules. I wanted to shutdown VPN interface eth0, but ended up shutting down eth1 while I was logged in via SSH: Hostname Public Network Interface Shutdown Within minutes I received an alert message on both mobile and email. Accidentally Changed Hostname and Triggered False AlarmĪccidentally changed the current hostname (I wanted to see current hostname settings) for one of our cluster node. I had sym links for my web server docroot (/home/httpd/http was symlinked to /To save disk space, I ran rm -rf on http directory. Similarly I end up running rsync command and deleted all new files by overwriting files from backup set (now I have switched to rsnapshot)Īgain, I had no backup. I end up deleting entire backup (note -c switch instead of -x): I had only one backup copy of my QT project and I just wanted to get a directory called functions. Join Patreon ➔ Destroyed Working Backups with Tar and Rsync (personal backups)

  • If your domain is not sending email, set these DNS settings to avoid spoofing and phishing.
  • #Mtty command line screen position how to#

  • How to protect Linux against rogue USB devices using USBGuard.
  • A podman tutorial for beginners – part I (run Linux containers without Docker and in daemonless mode).
  • How to set up Mariadb Galera cluster on Ubuntu or Debian Linux.
  • mtty command line screen position

  • How To Set Up SSH Keys With YubiKey as two-factor authentication (U2F/FIDO2).
  • How to set up Redis sentinel cluster on Ubuntu or Debian Linux.
  • Join my Patreon to support independent content creators and start reading latest guides:.
  • In-depth guides for developers and sysadmins at Opensourceflare✨.








  • Mtty command line screen position