Commands by renoirb (4)

  • 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 0
  • 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 1
  • 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 1
  • 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 0

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Turns red the stderr output
Reference: http://stackoverflow.com/a/4455706

convert a web page into a png
This requires the command-line print extension (see #2861 for more details). I use it to make up complex images with formatted text using CSS and whatnot. It's a lot slicker than imagemagick for certain things. Now imagine using a local webserver with PHP and a database to generate the images. Oh, the possibilities...

MP3 player
I tried a few curses based mp3 players for playing back choir practice songs for my wife. Unfortunately none of the ones I tried were capable of scrubbing a track. Firefox saves the day.

Extract a IRC like chat log out of an Adium xml logfile

Content search.
Grep will read the contents of each file in PWD and will use the REs $1 $2 ... $n to match the contents. In case of match, grep will print the appropriate file, line number and the matching line. It's just easier to write $ ff word1 word2 word3 Instead of $ grep -rinE 'word1|word2|word3' .

Continue a current job in the background

Show memory usage of all docker / lxc containers

List empty any directories

tail: watch a filelog
-f file(s) to be monitorized -n number of last line to be printed on the screen in this example, the content of two files are displayed

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }


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