微信小游戏开发的市场前景与创新策略探讨
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2022-09-22
[白开水]-maven的命令程序mvn脚本分析
最近公司将svn迁移到git,而且使用maven管理代码仓库,所以小小的研究了一下,为自动化持续集成做知识准备,以下是分析了maven的命令程序mvn: 总体感觉与tomcat的启动脚本startup大同小异 #!/bin/sh # ---------------------------------------------------------------------------- # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # ---------------------------------------------------------------------------- # ---------------------------------------------------------------------------- # Maven2 Start Up Batch script # # Required ENV vars: # ------------------ # JAVA_HOME - location of a JDK home dir # # Optional ENV vars # ----------------- # M2_HOME - location of maven2's installed home dir # MAVEN_OPTS - parameters passed to the Java VM when running Maven # e.g. to debug Maven itself, use # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 # MAVEN_SKIP_RC - flag to disable loading of mavenrc files # ---------------------------------------------------------------------------- #如果系统里有多JDK版本,就可以在这里指定JAVA_HOME,这样即使JAVA_HOME环境变量不是这个,也可以从这里弥补 #M2_HOME 也可以在这里指定,maven会在家目录生成.m2目录 #MAVEN_OPTS 这个是设maven启动参数的,有兴趣的同学可以研究下 JAVA_HOME=/usr/java/jdk1.6.0_38 if [ -z "$MAVEN_SKIP_RC" ] ; then if [ -f /etc/mavenrc ] ; then . /etc/mavenrc fi if [ -f "$HOME/.mavenrc" ] ; then . "$HOME/.mavenrc" fi fi #如果环境变量MAVEN_SKIP_RC存在,则从下面3个外部文件找是否设置maven的环境变量, #下面是系统环境检查,和tomcat的startup.sh一曲同工 # OS specific support. $var _must_ be set to either true or false. cygwin=false; darwin=false; mingw=false case "`uname`" in CYGWIN*) cygwin=true ;; MINGW*) mingw=true;; Darwin*) darwin=true # # Look for the Apple JDKs first to preserve the existing behaviour, and then look # for the new JDKs provided by Oracle. # if [[ -z "$JAVA_HOME" && -L /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home fi if [[ -z "$JAVA_HOME" && -L /System/Library/Java/JavaVirtualMachines/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi if [[ -z "$JAVA_HOME" && -L "/Library/Java/JavaVirtualMachines/CurrentJDK" ]] ; then # # Oracle JDKs # export JAVA_HOME=/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi ;; esac if [ -z "$JAVA_HOME" ] ; then if [ -r /etc/gentoo-release ] ; then JAVA_HOME=`java-config --jre-home` fi fi #此处貌似是为了照顾gentoo这个操作系统,特别加的,属于适应各操作系统方面的代码 if [ -z "$M2_HOME" ] ; then ## resolve links -
最近公司将svn迁移到git,而且使用maven管理代码仓库,所以小小的研究了一下,为自动化持续集成做知识准备,以下是分析了maven的命令程序mvn: 总体感觉与tomcat的启动脚本startup大同小异 #!/bin/sh # ---------------------------------------------------------------------------- # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # ---------------------------------------------------------------------------- # ---------------------------------------------------------------------------- # Maven2 Start Up Batch script # # Required ENV vars: # ------------------ # JAVA_HOME - location of a JDK home dir # # Optional ENV vars # ----------------- # M2_HOME - location of maven2's installed home dir # MAVEN_OPTS - parameters passed to the Java VM when running Maven # e.g. to debug Maven itself, use # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 # MAVEN_SKIP_RC - flag to disable loading of mavenrc files # ---------------------------------------------------------------------------- #如果系统里有多JDK版本,就可以在这里指定JAVA_HOME,这样即使JAVA_HOME环境变量不是这个,也可以从这里弥补 #M2_HOME 也可以在这里指定,maven会在家目录生成.m2目录 #MAVEN_OPTS 这个是设maven启动参数的,有兴趣的同学可以研究下 JAVA_HOME=/usr/java/jdk1.6.0_38 if [ -z "$MAVEN_SKIP_RC" ] ; then if [ -f /etc/mavenrc ] ; then . /etc/mavenrc fi if [ -f "$HOME/.mavenrc" ] ; then . "$HOME/.mavenrc" fi fi #如果环境变量MAVEN_SKIP_RC存在,则从下面3个外部文件找是否设置maven的环境变量, #下面是系统环境检查,和tomcat的startup.sh一曲同工 # OS specific support. $var _must_ be set to either true or false. cygwin=false; darwin=false; mingw=false case "`uname`" in CYGWIN*) cygwin=true ;; MINGW*) mingw=true;; Darwin*) darwin=true # # Look for the Apple JDKs first to preserve the existing behaviour, and then look # for the new JDKs provided by Oracle. # if [[ -z "$JAVA_HOME" && -L /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home fi if [[ -z "$JAVA_HOME" && -L /System/Library/Java/JavaVirtualMachines/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi if [[ -z "$JAVA_HOME" && -L "/Library/Java/JavaVirtualMachines/CurrentJDK" ]] ; then # # Oracle JDKs # export JAVA_HOME=/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi ;; esac if [ -z "$JAVA_HOME" ] ; then if [ -r /etc/gentoo-release ] ; then JAVA_HOME=`java-config --jre-home` fi fi #此处貌似是为了照顾gentoo这个操作系统,特别加的,属于适应各操作系统方面的代码 if [ -z "$M2_HOME" ] ; then ## resolve links - $0 may be a link to maven's home PRG="$0" #$0 ----当前shell名 # need this for relative symlinks #test –h File 文件存在并且是一个符号链接(同-L) while [ -h "$PRG" ] ; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then PRG="$link" else PRG="`dirname "$PRG"`/$link" fi done #这个是排除软链接,找出真实的命令运行目录 #如果有童鞋分析过tomcat的startup.sh脚本,就可以发现,上面的脚本基本雷同 saveddir=`pwd` M2_HOME=`dirname "$PRG"`/.. # make it fully qualified M2_HOME=`cd "$M2_HOME" && pwd` cd "$saveddir" # echo Using m2 at $M2_HOME fi #cd进入mvn的应用目录 # For Cygwin, ensure paths are in UNIX format before anything is touched if $cygwin ; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --unix "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"` fi # For Migwn, ensure paths are in UNIX format before anything is touched if $mingw ; then [ -n "$M2_HOME" ] && M2_HOME="`(cd "$M2_HOME"; pwd)`" [ -n "$JAVA_HOME" ] && JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" # TODO classpath? fi #上面一大串都是适应mingw和cygwin环境的,直接略过,下面才是干货 #test –z 字符串 字符串的长度为零 #如果没有设置JAVA_HOME,程序就自己去找JAVA_HOME if [ -z "$JAVA_HOME" ]; then javaExecutable="`which javac`" if [ -n "$javaExecutable" -a ! "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then #test –n 字符串的长度非零 #test 表达式1 –a 表达式2 两个表达式都为真 #link=`expr "$ls" : '.*-> \(.*\)$'` 模拟后: expr 'lrwxrwxrwx 1 root root 19 3月 17 10:12 ./bbb.sh -> /root/shell/test.sh' : '.*-> \(.*\)$' #很明确的发现是用expr来提取/root/shell/test.sh的内容 #而这个循环就可以明确其目的,排除命令为链接,找出命令真正的目录,防止后面的命令出错 # readlink(1) is not available as standard on Solaris 10. #[^] # 匹配不在指定组内的字符 #上面的判读,主要是判断which javac,是否存在.... readLink=`which readlink` if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then javaExecutable="`readlink -f \"$javaExecutable\"`" javaHome="`dirname \"$javaExecutable\"`" javaHome=`expr "$javaHome" : '\(.*\)/bin'` JAVA_HOME="$javaHome" export JAVA_HOME fi fi fi #如果没有设置JAVACMD,脚本就会在JAVA_HOME目录下去找 if [ -z "$JAVACMD" ] ; then if [ -n "$JAVA_HOME" ] ; then if [ -x "$JAVA_HOME/jre/sh/java" ] ; then # IBM's JDK on AIX uses strange locations for the executables JAVACMD="$JAVA_HOME/jre/sh/java" else JAVACMD="$JAVA_HOME/bin/java" fi else JAVACMD="`which java`" fi fi #test –x File 文件存在并且可执行 #javac命令用不了,那就报错了鸟~~~ if [ ! -x "$JAVACMD" ] ; then echo "Error: JAVA_HOME is not defined correctly." echo " We cannot execute $JAVACMD" exit 1 fi #没有定义JAVA_HOME,脚本有自己找不到,就会在这里报错 if [ -z "$JAVA_HOME" ] ; then echo "Warning: JAVA_HOME environment variable is not set." fi CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher # For Cygwin, switch paths to Windows format before running java if $cygwin; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --path --windows "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"` fi #上面一堆代码的目的,就是为了下面一句代码提供变量..... exec "$JAVACMD" \ $MAVEN_OPTS \ -classpath "${M2_HOME}"/boot/plexus-classworlds-*.jar \ "-Dclassworlds.conf=${M2_HOME}/bin/m2.conf" \ "-Dmaven.home=${M2_HOME}" \ ${CLASSWORLDS_LAUNCHER} "$@"
may be a link to maven's home PRG="最近公司将svn迁移到git,而且使用maven管理代码仓库,所以小小的研究了一下,为自动化持续集成做知识准备,以下是分析了maven的命令程序mvn: 总体感觉与tomcat的启动脚本startup大同小异 #!/bin/sh # ---------------------------------------------------------------------------- # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # ---------------------------------------------------------------------------- # ---------------------------------------------------------------------------- # Maven2 Start Up Batch script # # Required ENV vars: # ------------------ # JAVA_HOME - location of a JDK home dir # # Optional ENV vars # ----------------- # M2_HOME - location of maven2's installed home dir # MAVEN_OPTS - parameters passed to the Java VM when running Maven # e.g. to debug Maven itself, use # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 # MAVEN_SKIP_RC - flag to disable loading of mavenrc files # ---------------------------------------------------------------------------- #如果系统里有多JDK版本,就可以在这里指定JAVA_HOME,这样即使JAVA_HOME环境变量不是这个,也可以从这里弥补 #M2_HOME 也可以在这里指定,maven会在家目录生成.m2目录 #MAVEN_OPTS 这个是设maven启动参数的,有兴趣的同学可以研究下 JAVA_HOME=/usr/java/jdk1.6.0_38 if [ -z "$MAVEN_SKIP_RC" ] ; then if [ -f /etc/mavenrc ] ; then . /etc/mavenrc fi if [ -f "$HOME/.mavenrc" ] ; then . "$HOME/.mavenrc" fi fi #如果环境变量MAVEN_SKIP_RC存在,则从下面3个外部文件找是否设置maven的环境变量, #下面是系统环境检查,和tomcat的startup.sh一曲同工 # OS specific support. $var _must_ be set to either true or false. cygwin=false; darwin=false; mingw=false case "`uname`" in CYGWIN*) cygwin=true ;; MINGW*) mingw=true;; Darwin*) darwin=true # # Look for the Apple JDKs first to preserve the existing behaviour, and then look # for the new JDKs provided by Oracle. # if [[ -z "$JAVA_HOME" && -L /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home fi if [[ -z "$JAVA_HOME" && -L /System/Library/Java/JavaVirtualMachines/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi if [[ -z "$JAVA_HOME" && -L "/Library/Java/JavaVirtualMachines/CurrentJDK" ]] ; then # # Oracle JDKs # export JAVA_HOME=/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi ;; esac if [ -z "$JAVA_HOME" ] ; then if [ -r /etc/gentoo-release ] ; then JAVA_HOME=`java-config --jre-home` fi fi #此处貌似是为了照顾gentoo这个操作系统,特别加的,属于适应各操作系统方面的代码 if [ -z "$M2_HOME" ] ; then ## resolve links - $0 may be a link to maven's home PRG="$0" #$0 ----当前shell名 # need this for relative symlinks #test –h File 文件存在并且是一个符号链接(同-L) while [ -h "$PRG" ] ; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then PRG="$link" else PRG="`dirname "$PRG"`/$link" fi done #这个是排除软链接,找出真实的命令运行目录 #如果有童鞋分析过tomcat的startup.sh脚本,就可以发现,上面的脚本基本雷同 saveddir=`pwd` M2_HOME=`dirname "$PRG"`/.. # make it fully qualified M2_HOME=`cd "$M2_HOME" && pwd` cd "$saveddir" # echo Using m2 at $M2_HOME fi #cd进入mvn的应用目录 # For Cygwin, ensure paths are in UNIX format before anything is touched if $cygwin ; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --unix "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"` fi # For Migwn, ensure paths are in UNIX format before anything is touched if $mingw ; then [ -n "$M2_HOME" ] && M2_HOME="`(cd "$M2_HOME"; pwd)`" [ -n "$JAVA_HOME" ] && JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" # TODO classpath? fi #上面一大串都是适应mingw和cygwin环境的,直接略过,下面才是干货 #test –z 字符串 字符串的长度为零 #如果没有设置JAVA_HOME,程序就自己去找JAVA_HOME if [ -z "$JAVA_HOME" ]; then javaExecutable="`which javac`" if [ -n "$javaExecutable" -a ! "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then #test –n 字符串的长度非零 #test 表达式1 –a 表达式2 两个表达式都为真 #link=`expr "$ls" : '.*-> \(.*\)$'` 模拟后: expr 'lrwxrwxrwx 1 root root 19 3月 17 10:12 ./bbb.sh -> /root/shell/test.sh' : '.*-> \(.*\)$' #很明确的发现是用expr来提取/root/shell/test.sh的内容 #而这个循环就可以明确其目的,排除命令为链接,找出命令真正的目录,防止后面的命令出错 # readlink(1) is not available as standard on Solaris 10. #[^] # 匹配不在指定组内的字符 #上面的判读,主要是判断which javac,是否存在.... readLink=`which readlink` if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then javaExecutable="`readlink -f \"$javaExecutable\"`" javaHome="`dirname \"$javaExecutable\"`" javaHome=`expr "$javaHome" : '\(.*\)/bin'` JAVA_HOME="$javaHome" export JAVA_HOME fi fi fi #如果没有设置JAVACMD,脚本就会在JAVA_HOME目录下去找 if [ -z "$JAVACMD" ] ; then if [ -n "$JAVA_HOME" ] ; then if [ -x "$JAVA_HOME/jre/sh/java" ] ; then # IBM's JDK on AIX uses strange locations for the executables JAVACMD="$JAVA_HOME/jre/sh/java" else JAVACMD="$JAVA_HOME/bin/java" fi else JAVACMD="`which java`" fi fi #test –x File 文件存在并且可执行 #javac命令用不了,那就报错了鸟~~~ if [ ! -x "$JAVACMD" ] ; then echo "Error: JAVA_HOME is not defined correctly." echo " We cannot execute $JAVACMD" exit 1 fi #没有定义JAVA_HOME,脚本有自己找不到,就会在这里报错 if [ -z "$JAVA_HOME" ] ; then echo "Warning: JAVA_HOME environment variable is not set." fi CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher # For Cygwin, switch paths to Windows format before running java if $cygwin; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --path --windows "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"` fi #上面一堆代码的目的,就是为了下面一句代码提供变量..... exec "$JAVACMD" \ $MAVEN_OPTS \ -classpath "${M2_HOME}"/boot/plexus-classworlds-*.jar \ "-Dclassworlds.conf=${M2_HOME}/bin/m2.conf" \ "-Dmaven.home=${M2_HOME}" \ ${CLASSWORLDS_LAUNCHER} "$@"
" #最近公司将svn迁移到git,而且使用maven管理代码仓库,所以小小的研究了一下,为自动化持续集成做知识准备,以下是分析了maven的命令程序mvn: 总体感觉与tomcat的启动脚本startup大同小异 #!/bin/sh # ---------------------------------------------------------------------------- # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # ---------------------------------------------------------------------------- # ---------------------------------------------------------------------------- # Maven2 Start Up Batch script # # Required ENV vars: # ------------------ # JAVA_HOME - location of a JDK home dir # # Optional ENV vars # ----------------- # M2_HOME - location of maven2's installed home dir # MAVEN_OPTS - parameters passed to the Java VM when running Maven # e.g. to debug Maven itself, use # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 # MAVEN_SKIP_RC - flag to disable loading of mavenrc files # ---------------------------------------------------------------------------- #如果系统里有多JDK版本,就可以在这里指定JAVA_HOME,这样即使JAVA_HOME环境变量不是这个,也可以从这里弥补 #M2_HOME 也可以在这里指定,maven会在家目录生成.m2目录 #MAVEN_OPTS 这个是设maven启动参数的,有兴趣的同学可以研究下 JAVA_HOME=/usr/java/jdk1.6.0_38 if [ -z "$MAVEN_SKIP_RC" ] ; then if [ -f /etc/mavenrc ] ; then . /etc/mavenrc fi if [ -f "$HOME/.mavenrc" ] ; then . "$HOME/.mavenrc" fi fi #如果环境变量MAVEN_SKIP_RC存在,则从下面3个外部文件找是否设置maven的环境变量, #下面是系统环境检查,和tomcat的startup.sh一曲同工 # OS specific support. $var _must_ be set to either true or false. cygwin=false; darwin=false; mingw=false case "`uname`" in CYGWIN*) cygwin=true ;; MINGW*) mingw=true;; Darwin*) darwin=true # # Look for the Apple JDKs first to preserve the existing behaviour, and then look # for the new JDKs provided by Oracle. # if [[ -z "$JAVA_HOME" && -L /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home fi if [[ -z "$JAVA_HOME" && -L /System/Library/Java/JavaVirtualMachines/CurrentJDK ]] ; then # # Apple JDKs # export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi if [[ -z "$JAVA_HOME" && -L "/Library/Java/JavaVirtualMachines/CurrentJDK" ]] ; then # # Oracle JDKs # export JAVA_HOME=/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home fi ;; esac if [ -z "$JAVA_HOME" ] ; then if [ -r /etc/gentoo-release ] ; then JAVA_HOME=`java-config --jre-home` fi fi #此处貌似是为了照顾gentoo这个操作系统,特别加的,属于适应各操作系统方面的代码 if [ -z "$M2_HOME" ] ; then ## resolve links - $0 may be a link to maven's home PRG="$0" #$0 ----当前shell名 # need this for relative symlinks #test –h File 文件存在并且是一个符号链接(同-L) while [ -h "$PRG" ] ; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then PRG="$link" else PRG="`dirname "$PRG"`/$link" fi done #这个是排除软链接,找出真实的命令运行目录 #如果有童鞋分析过tomcat的startup.sh脚本,就可以发现,上面的脚本基本雷同 saveddir=`pwd` M2_HOME=`dirname "$PRG"`/.. # make it fully qualified M2_HOME=`cd "$M2_HOME" && pwd` cd "$saveddir" # echo Using m2 at $M2_HOME fi #cd进入mvn的应用目录 # For Cygwin, ensure paths are in UNIX format before anything is touched if $cygwin ; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --unix "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"` fi # For Migwn, ensure paths are in UNIX format before anything is touched if $mingw ; then [ -n "$M2_HOME" ] && M2_HOME="`(cd "$M2_HOME"; pwd)`" [ -n "$JAVA_HOME" ] && JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" # TODO classpath? fi #上面一大串都是适应mingw和cygwin环境的,直接略过,下面才是干货 #test –z 字符串 字符串的长度为零 #如果没有设置JAVA_HOME,程序就自己去找JAVA_HOME if [ -z "$JAVA_HOME" ]; then javaExecutable="`which javac`" if [ -n "$javaExecutable" -a ! "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then #test –n 字符串的长度非零 #test 表达式1 –a 表达式2 两个表达式都为真 #link=`expr "$ls" : '.*-> \(.*\)$'` 模拟后: expr 'lrwxrwxrwx 1 root root 19 3月 17 10:12 ./bbb.sh -> /root/shell/test.sh' : '.*-> \(.*\)$' #很明确的发现是用expr来提取/root/shell/test.sh的内容 #而这个循环就可以明确其目的,排除命令为链接,找出命令真正的目录,防止后面的命令出错 # readlink(1) is not available as standard on Solaris 10. #[^] # 匹配不在指定组内的字符 #上面的判读,主要是判断which javac,是否存在.... readLink=`which readlink` if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then javaExecutable="`readlink -f \"$javaExecutable\"`" javaHome="`dirname \"$javaExecutable\"`" javaHome=`expr "$javaHome" : '\(.*\)/bin'` JAVA_HOME="$javaHome" export JAVA_HOME fi fi fi #如果没有设置JAVACMD,脚本就会在JAVA_HOME目录下去找 if [ -z "$JAVACMD" ] ; then if [ -n "$JAVA_HOME" ] ; then if [ -x "$JAVA_HOME/jre/sh/java" ] ; then # IBM's JDK on AIX uses strange locations for the executables JAVACMD="$JAVA_HOME/jre/sh/java" else JAVACMD="$JAVA_HOME/bin/java" fi else JAVACMD="`which java`" fi fi #test –x File 文件存在并且可执行 #javac命令用不了,那就报错了鸟~~~ if [ ! -x "$JAVACMD" ] ; then echo "Error: JAVA_HOME is not defined correctly." echo " We cannot execute $JAVACMD" exit 1 fi #没有定义JAVA_HOME,脚本有自己找不到,就会在这里报错 if [ -z "$JAVA_HOME" ] ; then echo "Warning: JAVA_HOME environment variable is not set." fi CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher # For Cygwin, switch paths to Windows format before running java if $cygwin; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --path --windows "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"` fi #上面一堆代码的目的,就是为了下面一句代码提供变量..... exec "$JAVACMD" \ $MAVEN_OPTS \ -classpath "${M2_HOME}"/boot/plexus-classworlds-*.jar \ "-Dclassworlds.conf=${M2_HOME}/bin/m2.conf" \ "-Dmaven.home=${M2_HOME}" \ ${CLASSWORLDS_LAUNCHER} "$@"
----当前shell名 # need this for relative symlinks #test –h File 文件存在并且是一个符号链接(同-L) while [ -h "$PRG" ] ; do ls=`ls -ld "$PRG"` link=`expr "$ls" : '.*-> \(.*\)$'` if expr "$link" : '/.*' > /dev/null; then PRG="$link" else PRG="`dirname "$PRG"`/$link" fi done #这个是排除软链接,找出真实的命令运行目录 #如果有童鞋分析过tomcat的startup.sh脚本,就可以发现,上面的脚本基本雷同 saveddir=`pwd` M2_HOME=`dirname "$PRG"`/.. # make it fully qualified M2_HOME=`cd "$M2_HOME" && pwd` cd "$saveddir" # echo Using m2 at $M2_HOME fi #cd进入mvn的应用目录 # For Cygwin, ensure paths are in UNIX format before anything is touched if $cygwin ; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --unix "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"` fi # For Migwn, ensure paths are in UNIX format before anything is touched if $mingw ; then [ -n "$M2_HOME" ] && M2_HOME="`(cd "$M2_HOME"; pwd)`" [ -n "$JAVA_HOME" ] && JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" # TODO classpath? fi #上面一大串都是适应mingw和cygwin环境的,直接略过,下面才是干货 #test –z 字符串 字符串的长度为零 #如果没有设置JAVA_HOME,程序就自己去找JAVA_HOME if [ -z "$JAVA_HOME" ]; then javaExecutable="`which javac`" if [ -n "$javaExecutable" -a ! "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then #test –n 字符串的长度非零 #test 表达式1 –a 表达式2 两个表达式都为真 #link=`expr "$ls" : '.*-> \(.*\)$'` 模拟后: expr 'lrwxrwxrwx 1 root root 19 3月 17 10:12 ./bbb.sh -> /root/shell/test.sh' : '.*-> \(.*\)$' #很明确的发现是用expr来提取/root/shell/test.sh的内容 #而这个循环就可以明确其目的,排除命令为链接,找出命令真正的目录,防止后面的命令出错 # readlink(1) is not available as standard on Solaris 10. #[^] # 匹配不在指定组内的字符 #上面的判读,主要是判断which javac,是否存在.... readLink=`which readlink` if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then javaExecutable="`readlink -f \"$javaExecutable\"`" javaHome="`dirname \"$javaExecutable\"`" javaHome=`expr "$javaHome" : '\(.*\)/bin'` JAVA_HOME="$javaHome" export JAVA_HOME fi fi fi #如果没有设置JAVACMD,脚本就会在JAVA_HOME目录下去找 if [ -z "$JAVACMD" ] ; then if [ -n "$JAVA_HOME" ] ; then if [ -x "$JAVA_HOME/jre/sh/java" ] ; then # IBM's JDK on AIX uses strange locations for the executables JAVACMD="$JAVA_HOME/jre/sh/java" else JAVACMD="$JAVA_HOME/bin/java" fi else JAVACMD="`which java`" fi fi #test –x File 文件存在并且可执行 #javac命令用不了,那就报错了鸟~~~ if [ ! -x "$JAVACMD" ] ; then echo "Error: JAVA_HOME is not defined correctly." echo " We cannot execute $JAVACMD" exit 1 fi #没有定义JAVA_HOME,脚本有自己找不到,就会在这里报错 if [ -z "$JAVA_HOME" ] ; then echo "Warning: JAVA_HOME environment variable is not set." fi CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher # For Cygwin, switch paths to Windows format before running java if $cygwin; then [ -n "$M2_HOME" ] && M2_HOME=`cygpath --path --windows "$M2_HOME"` [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"` fi #上面一堆代码的目的,就是为了下面一句代码提供变量..... exec "$JAVACMD" \ $MAVEN_OPTS \ -classpath "${M2_HOME}"/boot/plexus-classworlds-*.jar \ "-Dclassworlds.conf=${M2_HOME}/bin/m2.conf" \ "-Dmaven.home=${M2_HOME}" \ ${CLASSWORLDS_LAUNCHER} "$@"版权声明:本文内容由网络用户投稿,版权归原作者所有,本站不拥有其著作权,亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容,请联系我们jiasou666@gmail.com 处理,核实后本网站将在24小时内删除侵权内容。
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