Commands by renoirb (4)

  • Convert JSON to YAML (unicode safe)

    If you tried the other Python version of Convert JSON to YAML and you end up with lines that has "!!python/unicode", this version of the command is for you.


    1
    python -c 'import sys, yaml, json; yaml.safe_dump(json.load(sys.stdin), sys.stdout, allow_unicode=True)' < foo.json > foo.yaml
    renoirb · 2015-01-20 15:58:29 8
  • Find supported dependency manager manifests

    List all dependencies manifests so you can install them. In a scenario where you want to deploy a number of web applications and run their dependency managers, how could you run all of them in a systematic order. One of the complexity is to ensure you get only your own top level dependencies. That way, you don recursively call development dependencies of your own dependencies. Otherwise you might end up discovering dependency management manifests that are already been pulled by your own projects. # Using this command This command helps me find them and I can then run what?s required to pull them from their respective sources. This command assumes the following: 1. Your code checkouts are in a flat repository layout (i.e. not nested). 2. Finds manifests for: - NPM (nodejs), - Composer (php), - bower, - requirements.txt (Python), and - git submodules Show Sample Output


    0
    find /srv/code -maxdepth 4 -type f -regex ".*\(\(package\|composer|npm\\|bower\)\.json\|Gemfile\|requirements\.txt\\|\.gitmodules\)"
    renoirb · 2014-11-28 16:34:35 10
  • Edit hosts file to remove "foo.novalocal" from it where foo is the hostname of a new VM

    When booting a VM through OpenStack and managed through cloudinit, the hosts file gets to write a line simiar to 127.0.1.1 ns0.novalocal ns0 This command proven useful while installing a configuration manager such as Salt Stack (or Puppet, or Ansible) and getting node name


    0
    sed -e "s/^127.0.1.1 $(hostname).novalocal/127.0.1.1/g" /etc/hosts
    renoirb · 2014-09-25 15:38:43 13
  • Listing all your bundles Entities files to issue a doctrine:generate:entities

    When I do a major change in my entities, I want to find a way to find all my Entities names and create the commande for me. So instead of doing ls src/Your/OwnBundle... and then do it manually, this helps a lot. Show Sample Output


    0
    find ./src -type d -name "Entity" | xargs ls -A | cut -d . -f1 | sed 's_^_app/console doctrine:generate:entities YourOwnBundleName:_'
    renoirb · 2012-04-11 21:28:02 4

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escape any command aliases
e.g. if rm is aliased for 'rm -i', you can escape the alias by prepending a backslash: rm [file] # WILL prompt for confirmation per the alias \rm [file] # will NOT prompt for confirmation per the default behavior of the command

vim multiple files at one time, split vertically.

total text files in current dir

Take a screenshot of a login screen
when using Gnome or KDE, you will have a hard time getting a screenshot of something like a login screen, or any other screen that occurs before the desktop environment is up and monitoring the printscreen key. (this probably applies for other DEs as well, but I haven't used them) What this command is meant to do is take a screenshot of an X window using a command you can run from your virtual terminals (actual text terminals, not just an emulator) To do this: Press CTRL+ALT+F1 to go to a virtual (text) terminal once your login window comes up Login to the virtual terminal and enter the command (you'll have to type it in) You should now have a file called screenshot.png in your home directory with your screenshot in it. For those of you who are new to the virtual terminal thing, you can use CTRL+ALT+F7 to get back to your regular GUI From http://www.gnome.org

Delete all local git branches that have been merged
This checks if the branch has been merged with master and then will delete the ones that have been. Keeps your local git repo nice and clean from all the branches.

Easily decode unix-time (funtion)

find previously entered commands
Searches bash-history in reverse order (last entered commands first). Pressing ctrl+r again shows the next matching entry.

List all active access_logs for currently running Apache or Lighttpd process
Ever logged into a *nix box and needed to know which webserver is running and where all the current access_log files are? Run this one liner to find out. Works for Apache or Lighttpd as long as CustomLog name is somewhat standard. HINT: works great as input into for loop, like this: $ for i in `lsof -p $(netstat -ltpn|awk '$4 ~ /:80$/ {print substr($7,1,index($7,"/")-1)}')| awk '$9 ~ /access.log$/ {print $9| "sort -u"}'` ; do echo $i; done Very useful for triage on unfamiliar servers!

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

a simple bash one-liner to create php file and call php function

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