Home For Companies Submit a post Archive Random RSS Twitter DevOps Reactions Say it with pictures. Describe your feelings about your everyday sysadmin interactions. Inspired by Infosec Reactions. Follow @devopsreactions Tweet <a href="http://twitter.com/devopsreactions" class="linked_button bright_blue_button" id="follow_me"></a> <script type="text/javascript"> function link_urls(text) { var regex = /[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&~\?\/.=]+/g; return text.replace(regex, function(url) { return url.link(url); }); } function recent_tweets(data) { if (data.length > 0) { var latest = data[0]; $("#latest_tweet").html(link_urls(latest.text)); } } ...

Arch Linux global navigation bar Home Packages Forums Wiki Bugs AUR Download #archnavbar systemd-timesyncd From ArchWiki Jump to: navigation , search start content Related articles Time Network Time Protocol daemon OpenNTPD Chrony systemd-networkd systemd From the systemd mailing list : systemd-timesyncd is a daemon that has been added for synchronizing the system clock across the network. It implements an SNTP client. In contrast to NTP implementations such as chrony or the NTP reference server this only implements a client side, and does not bother with the full NTP complexity, focusing only on querying time from one remote server and synchronizing the local clock to it. Unless you intend to serve NTP to networked clients or want to connect to local hardware clocks this simple NTP client should be more than appropriate for most installations. The daemon runs w...

Arch Linux global navigation bar Home Packages Forums Wiki Bugs AUR Download #archnavbar Chrony From ArchWiki Jump to: navigation , search start content Related articles Time Network Time Protocol daemon systemd-timesyncd OpenNTPD This article describes how to set up and run Chrony, an alternative NTP client and server that is roaming friendly and designed specifically for systems that are not online all the time. 1 Installation 2 Configuration 2.1 NTP Servers 2.2 Command Keys 2.3 Telling chronyd an internet connection has been made 3 Usage 3.1 Starting chronyd 3.2 Synchronising chrony hardware clock from the system clock 4 Notifying network state 4.1 NetworkManager 4.2 connman 4.3 netctl 5 See also Installation chrony is available from the official repositories . Alternatives to Chrony are NTPd , the reference implementation of NTP, systemd ...

Sign up for a GitHub account Sign in All Gists colby / .git_bashrc.sh Created January 09, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav Big dumb prompt for .bashrc View .git_bashrc.sh .git_bashrc.sh Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 RESTORE= ' \[\033[0m\] ' RED= ' \[\033[00;31m\] ' GREEN= ' \[\033[00;32m\] ' YELLOW= ' \[\033[00;33m\] ' PURPLE= ' \[\033[00;35m\] '...

Sign up for a GitHub account Sign in All Gists colby / git.sh Created January 10, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav View git.sh git.sh Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 # save last status PROMPT_COMMAND= ' export last_status=$? ' PS1= " \n\u@\H:\w \$ (git_prompt)\n \$ (last_status) \$ " # only show status when non zero function last_status { if [ $last_status -gt 0 ] ; then echo $last_status fi } function git_prompt { # are we in a git repo? if git rev-parse --...

Tutorials BASH Shell Troubleshooting Nginx Networking MySQL Google Cloud Platform Amazon Cloud Computing Rackspace Cloud Computing Linux CentOS Debian / Ubuntu Ubuntu Linux Suse RedHat and Friends Slackware Linux UNIX AIX Mac OS X FreeBSD FreeBSD Jails (VPS) Openbsd Solaris See all tutorial topics Blog About Contact us Forum Linux Scripting Guide RSS/FEED Linux FAQ / Howtos by nixCraft on January 13, 2008 · 19 comments · LAST UPDATED February 24, 2014 in BASH Shell , Linux , UNIX I 've a small shell script and I would like to convert all incoming user input to lowercase using a shell script. How do I convert uppercase words or strings to a lowercase or vise versa on Unix-like / Linux bash shell? Use the tr command to convert all incoming text / words / variable data from upper to lower case or vise versa (translate all uppercase characters to lowercase). Bash version 4.x+ user Tutor...

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Sign up for a GitHub account Sign in All Gists colby / .git_bashrc.sh Created January 09, 2015 Code Revisions 1 /.sunken-menu-group /.sunken-menu-contents Embed HTTPS SSH You can clone with HTTPS or SSH . Download Gist /.only-with-full-nav Big dumb prompt for .bashrc View .git_bashrc.sh .git_bashrc.sh Raw File suppressed. Click to show. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 RESTORE= ' \[\033[0m\] ' RED= ' \[\033[00;31m\] ' GREEN= ' \[\033[00;32m\] ' YELLOW= ' \[\033[00;33m\] ' PURPLE= ' \[\033[00;35m\] '...

As I was listening to Anil talk about daemons spawning processes and sysadmins killing them, I thought, "What a great user interface!" Imagine running around with a shotgun blowing away your daemons and processes, never needing to type kill -9 again. Sneaking up on my processes. In 1981, Vernor Vinge introduced the concept of cyberspace to the reading public in his novella True Names , <a href="truenames.html"> in which characters could plug into a virtual universe where their actions in a fantasy world mapped to performing sophisticated actions on the network. For example, walking along a tricky path through a swamp would be the same as going through a firewall. The mapping of abstract operations to an intuitive environment is a difficult problem. There are two distinct obstacles: the environment must be intuitive and the mapping must be accurate. If the environmen...