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 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456<!DOCTYPE html> <!--[if IEMobile 7 ]><html class="no-js iem7"><![endif]--> <!--[if lt IE 9]><html class="no-js lte-ie8"><![endif]--> <!--[if (gt IE 8)|(gt IEMobile 7)|!(IEMobile)|!(IE)]><!--><html class="no-js" lang="en"><!--<![endif]--> <head> <meta charset="utf-8"> <title>Calling the correct Grails version automatically from command line - TechBeats</title> <meta name="author" content="Deluan Quintão"> <meta name="description" content="UPDATE: For latest version and instructions, see http://github.com/deluan/grails.sh Now that I decided to organize and publish some of my code/hacks …"> <!-- http://t.co/dKP3o1e --> <meta name="HandheldFriendly" content="True"> <meta name="MobileOptimized" content="320"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="canonical" href="http://techbeats.deluan.com/calling-the-correct-grails-version-automatically-from-command-line/"> <link href="/favicon.png" rel="icon"> <link href="/stylesheets/screen.css" media="screen, projection" rel="stylesheet" type="text/css"> <script src="/javascripts/modernizr-2.0.js"></script> <script src="/javascripts/ender.js"></script> <script src="/javascripts/octopress.js" type="text/javascript"></script> <link href="/atom.xml" rel="alternate" title="TechBeats" type="application/atom+xml"> <!--Fonts from Google"s Web font directory at http://google.com/webfonts --> <link href="http://fonts.googleapis.com/css?family=PT+Serif:regular,italic,bold,bolditalic" rel="stylesheet" type="text/css"> <link href="http://fonts.googleapis.com/css?family=PT+Sans:regular,italic,bold,bolditalic" rel="stylesheet" type="text/css"> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-2382675-13']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> </head> <body > <nav role="navigation"><ul class="subscription" data-subscription="rss"> <li><a href="/atom.xml" rel="subscribe-rss" title="subscribe via RSS">RSS</a></li> </ul> <form action="https://www.google.com/search" method="get"> <fieldset role="search"> <input type="hidden" name="q" value="site:techbeats.deluan.com" /> <input class="search" type="text" name="q" results="0" placeholder="Search"/> </fieldset> </form> <ul class="main-navigation"> <li><a href="/"> <span class="blue_light"> TechBeats </span> <span class="blue_dark"> ~ Show me the code! </span> </a></li> <li><a href="/">Blog</a></li> <li><a href="/blog/archives">Archives</a></li> </ul> </nav> <div id="main"> <div id="content"> <div> <article class="hentry" role="article"> <header> <h1 class="entry-title">Calling the correct Grails version automatically from command line</h1> <p class="meta"> <time datetime="2010-10-05T00:48:53-04:00" pubdate data-updated="true">Oct 5<sup>th</sup>, 2010</time> | <a href="#disqus_thread">Comments</a> </p> </header> <div class="entry-content"><p><strong>UPDATE</strong>: For latest version and instructions, see <a href="http://github.com/deluan/grails.sh">http://github.com/deluan/grails.sh</a></p> <p>Now that I decided to organize and publish some of my code/hacks here, I thought it would be a good thing to republish here my Grails caller script.</p> <p>I work on and maintain various Grails projects at the same time, and some of them uses versions of Grails as old as 1.0.3! So the question is: How to call the right version of grails command for a given project, the version that the project was created with?</p> <!-- more --> <p>First I tried changing the <code>GRAILS_HOME</code> environment variable every time I was going to work with a project that uses a different version than the default. But it’s just too much work for a thing that should be transparent. So I decided to create a shell script to solve this problem. The script should detect which Grails version to call when it’s executed. Here’s the script I came up with:</p> <div><pre><code>#!/bin/sh # Author: Deluan (http://techbeats.deluan.com) # Check if GRAILS_HOME is set if [ -z "$GRAILS_HOME" -o ! -d "$GRAILS_HOME" ]; then echo "Error: GRAILS_HOME not set" exit 2 fi # Extract the base path from GRAILS_HOME BASE_GRAILS_PATH=`echo $GRAILS_HOME | sed -e "s/[^\/\\]*$//" -e "s/^$/./"` APP_PROP="application.properties" # Try to get the version from the command line TRY_VERSION=$1 if [ -d "${BASE_GRAILS_PATH}/grails-${TRY_VERSION}" ]; then VERSION=$TRY_VERSION shift fi # Or else get the version from the application.properties in the current directory [ -z "$VERSION" -a -f "$APP_PROP" ] && VERSION=`awk -F'=' '/app.grails.version/ { print $2 }' $APP_PROP | tr -d '\r\n'` # Or else use the default version if [ -z "$VERSION" ]; then VERSION=`basename $GRAILS_HOME | cut -f 2 -d "-"` fi export GRAILS_HOME=${BASE_GRAILS_PATH}/grails-${VERSION} GRAILS_CMD=${GRAILS_HOME}/bin/grails if [ ! -x "$GRAILS_CMD" ]; then echo "Error: grails command not found at '$GRAILS_CMD'!" exit 3 fi exec $GRAILS_CMD $* </code></pre></div> <h2>How it Works?</h2> <p>The script first checks if you specified a version in the command line, like: <code>grails 1.3.5-SNAPSHOT create-app</code>. If not, it looks for an <code>application.properties</code> file in the current folder. This file keeps some metadata for Grails projects, including the Grails version the project was created with. If it does not find any <code>application.properties</code> in the current folder, it then just calls the <a href="http://grails.org/Installation">default Grails installed</a> in your system, the one that <code>GRAILS_HOME</code> points to.</p> <h2>Prerequisites</h2> <ul> <li>All your Grails versions must be installed under the same base directory. Ex:</li> </ul> <figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span> <span class='line-number'>2</span> <span class='line-number'>3</span> <span class='line-number'>4</span> <span class='line-number'>5</span> </pre></td><td class='code'><pre><code class=''><span class='line'> /opt/grails-1.0.3 </span><span class='line'> /opt/grails-1.1.1 </span><span class='line'> /opt/grails-1.2-M2 </span><span class='line'> /opt/grails-1.3.3 </span><span class='line'> /opt/grails-1.3.5-SNAPSHOT</span></code></pre></td></tr></table></div></figure> <ul> <li><p><code>GRAILS_HOME</code> environment variable must be set and point to your “default” Grails installation</p></li> <li><p>This script was tested on Mac OS X (Snow Leopard), Linux (Ubuntu) and Windows (with cygwin)</p></li> </ul> <h2>Installation</h2> <ul> <li>Download the script: <a href="http://github.com/deluan/grails.sh/raw/master/grails">http://github.com/deluan/grails.sh/raw/master/grails</a></li> <li>Include the folder where it is installed in your <code>PATH</code>.</li> <li>Exclude <code>$GRAILS_HOME/bin</code> from your <code>PATH</code></li> </ul> <h2>Usage</h2> <p>Using the script is as transparent as possible:</p> <ul> <li>If you invoke it from a project folder, it will detect the version used by the project and call the correct grails (if it is installed in your system)</li> <li>If you invoke it from any other folder that does not contain a Grails project, it will call the “default” Grails installation</li> <li>If you want to call a specific Grails version (i.e. when doing an upgrade) you can specify the version you want in the first parameter. Ex:</li> </ul> <figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span> </pre></td><td class='code'><pre><code class=''><span class='line'>$ grails 1.3.3 upgrade</span></code></pre></td></tr></table></div></figure> </div> <footer> <p class="meta"> <span class="byline author vcard">Posted by <span class="fn">Deluan Quintão</span></span> <time datetime="2010-10-05T00:48:53-04:00" pubdate data-updated="true">Oct 5<sup>th</sup>, 2010</time> <span class="categories"> <a class='category' href='/blog/tag/bash/'>bash</a>, <a class='category' href='/blog/tag/grails/'>grails</a> </span> </p> <div class="sharing"> <a href="http://twitter.com/share" class="twitter-share-button" data-url="http://techbeats.deluan.com/calling-the-correct-grails-version-automatically-from-command-line/" data-via="deluan" data-counturl="http://techbeats.deluan.com/calling-the-correct-grails-version-automatically-from-command-line/" >Tweet</a> <div class="g-plusone" data-size="medium"></div> <div class="fb-like" data-send="true" data-width="450" data-show-faces="false"></div> </div> <p class="meta"> <a class="basic-alignment left" href="/how-to-use-an-external-log4j-dot-properties-in-you-grails-project/" title="Previous Post: How to use an external log4j.properties in you Grails project">« How to use an external log4j.properties in you Grails project</a> <a class="basic-alignment right" href="/using-spring-di-in-your-gaelyk-projects/" title="Next Post: Using Spring DI in your Gaelyk projects">Using Spring DI in your Gaelyk projects »</a> </p> </footer> </article> <section> <h1>Comments</h1> <div id="disqus_thread" aria-live="polite"><noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript> </div> </section> </div> <aside class="sidebar"> <section> <h1>About Me</h1> <p> Senior developer and architect interested in backend development, DevOps and music :) </p> </section> <section> <h1>Recent Posts</h1> <ul id="recent_posts"> <li class="post"> <a href="/processing-large-templates-with-gradle-and-freemarker/">Processing large templates with Gradle and FreeMarker</a> </li> <li class="post"> <a href="/file-encoding-auto-detection-for-zk-fileupload-component/">File encoding auto-detection for ZK Fileupload component</a> </li> <li class="post"> <a href="/profiling-web-requests-in-your-grails-application/">Profiling web requests in your Grails application</a> </li> <li class="post"> <a href="/using-cache-headers-plugin-in-a-non-english-server/">Using Cache-Headers plugin in a non-english server</a> </li> <li class="post"> <a href="/apache-shiro-tags-for-jsffacelets">Apache Shiro tags for Facelets - Securing your JSF pages</a> </li> </ul> </section> <section> <h1>GitHub Repos</h1> <ul id="gh_repos"> <li class="loading">Status updating...</li> </ul> <a href="https://github.com/deluan">@deluan</a> on GitHub <script type="text/javascript"> $.domReady(function(){ if (!window.jXHR){ var jxhr = document.createElement('script'); 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