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First cut of has
No need to install anything, no need to hit any url. all you need is bash. Many rough edges, many commands missing. there are potential unsafe operations like eval. but still feels much simpler than previous edition.
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Kunal Dabir
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README.md
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README.md
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# dq
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# has
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Check how developer friendly is your machine!
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`has` helps you check presence of various command line tools on path.
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## How ?
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## How ?
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Just fire the following from the Terminal
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Download the `has` file. There is no dependency apart from `bash` itself
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curl -sL https://dqhub.herokuapp.com/dq?check=*/java,*/ruby,*/python,*/git,*/node | bash`
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$ bash has node npm java git gradle
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✔ node 8.2.1
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Should produce output like:
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✔ npm 5.3.0
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✔ java 1.8.0
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✔ git 2.3.0
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✔ git 2.14.1
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✔ java 1.8.0
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✔ gradle 4.0.1
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✔ node 0.12.0
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✔ python 2.7.6
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✔ ruby 2.1.2
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Your dq is 5 / 5
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We have checks for more than 40 commands,
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## Sharable url?
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The urls like above look bit long and scary. They are not 'share' friendly. We've got you covered. You can shorten
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the url either using dqhub itself (and give a logical name too) or any third party url-shortner.
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We have already done for the check that we did above:
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curl -sL https://dqhub.herokuapp.com/check/minimal | bash
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**Feeling courageous**, see what all you have got :
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curl -sL https://dqhub.herokuapp.com/check/all | bash
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This checks for about 40 commands on your box
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## More configurable DQ
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You can edit the query params to make dq check for only those commands that you care about:
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https://dqhub.herokuapp.com/dq?check=frontend/*
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Check the lib directory structure, `check` query param should be comma separated list of globs (path)
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## Running Locally
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`cd` in to directory and just do a `bundle install` once and then to start server `rackup`.
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## Rolling out your own locally
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When you need to mix and match, it's equally simple. Checkout the repo, and execute from the root:
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`ruby build.rb <command_patterns> | sh`
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For example, if you develop frontend apps with node/ruby and use some typical databases
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`ruby build.rb "db/*,frontend/*,ruby/*" | sh`
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Or, you develop server side java/groovy and use some common databases
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`ruby build.rb "java/*,groovy/*,db/*" | sh`
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There no external gem dependency, you just need to have `ruby` though.
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## Deploying to heroku
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heroku addons:add mongolab
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## #noserver
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checkout bash-only branch, it's maintained by awesome @dexterous.
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## About
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Ever got onto a new machine or a remote server ? If you develop, you almost certainly need to check availability of your
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tool-chain on command line. DQ is intended to relieve you from pain of checking each command individually.
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It was named DQ as Developer Quotient (or Developer Friendliness Quotient of a machine), which may not be the most
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apt name but that was the best name I could think of.
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## Contributing
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Please submit more command checks, it's very easy to do so. Fork the repo and send PR.
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Issues and feedback welcome.
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## Paranoid ?
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Don't want to run `curl` piping to `bash`. Understandably, you might be concerned. Worry not.
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- If you still want to check, do a `curl -sL <url> | cat` first.
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(replacing `bash` with `cat`, to see the content of the file )
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### ♥
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### ♥
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121
has
Normal file
121
has
Normal file
@ -0,0 +1,121 @@
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#!/usr/bin/env bash
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## Important so that version is not extracted for failed commands (not found)
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set -o pipefail
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PASS='✔'
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FAIL='✘'
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REGEX_SIMPLE_VERSION="([[:digit:]]+\.?){2,3}"
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__dynamic_detect(){
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cmd=$1
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params=$2
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version=$(eval ${cmd} ${params} "2>&1" | egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
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status=$?
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}
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# commands that use `--version` flag
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__dynamic_detect--version(){
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__dynamic_detect $1 "--version"
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}
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## commands that use `-version` flag
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__dynamic_detect-version(){
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__dynamic_detect $1 "-version"
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}
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# commands that use `-v` flag
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__dynamic_detect-v(){
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__dynamic_detect $1 "-v"
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}
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__detect(){
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name=$1
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# setup aliases
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case ${name} in
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golang) command="go" ;;
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jre) command="java" ;;
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jdk) command="javac" ;;
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nodejs) command="node" ;;
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goreplay) command="gor";;
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*) command=${name} ;;
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esac
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case ${command} in
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go)
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version=$(go version 2>&1| egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
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status=$?
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;;
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hugo)
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version=$(hugo version 2>&1| egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
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status=$?
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;;
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ab)
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version=$(ab -V 2>&1 | egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
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status=$?
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;;
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gor)
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version=$(gor version 2>&1 | egrep -o "$REGEX_SIMPLE_VERSION" | head -1)
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if [ $? -eq 1 ]; then status=0; else status=1; fi
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;;
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# those that need -version flag
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ant|java|javac) __dynamic_detect-version ${command} ;;
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# those that need --version flag
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git|node|npm|ruby|gem|rake) __dynamic_detect--version ${command} ;;
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groovy|gradle) __dynamic_detect--version ${command} ;;
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*)
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## Can allow dynamic checking here
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if [[ "${HAS_ALLOW_UNSAFE}" == "y" ]]; then
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__dynamic_detect--version ${command}
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else
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status="-1"
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fi
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;;
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esac
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if [ "$status" -eq "-1" ]; then
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echo ${FAIL} ${command} "not understood"
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elif [ $status -eq 127 ]; then
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echo ${FAIL} ${command}
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elif [ ${status} -eq 0 ]; then
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echo ${PASS} ${command} ${version}
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else
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echo ${PASS} ${command}
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fi
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}
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# if no arguments passed to script
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if [ "$#" -eq 0 ]; then
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# print help
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echo "${0} v1.0"
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echo "USAGE: ${0} <command-names>.."
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echo "EXAMPLE: ${0} git curl node"
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else
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# for each arg
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for cmd in "$@"; do
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__detect $cmd
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done
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fi
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