Shell脚本实现在Linux系统中自动安装JDK

A：本脚本运行的机器，Linux
B：待安装JDK的机器, Linux

首先在脚本运行的机器A上确定可以ssh无密码登录到待安装jdk的机器B上，然后就可以在A上运行本脚本:

$ ./install-jdk.sh B的IP

or:

$ ./install-jdk.sh "B的IP" "JDK的URI"

就可以在机器B上安装JDK。jdk使用的tar包需要用户自己设定DEFAULT_JDK_SRC=？，保证可以wget得到即可。下面是全部脚本内容：

#!/bin/bash  

#  

# @file  

#   install-jdk.sh  

#  

# @date  

#   2013-12-19  

#  

# @author  

#   cheungmine  

#  

# @version  

#   0.0.1pre  

#  

# @usage:  

#   ./install-jdk.sh 192.168.122.206  

#  

################################################################################  

. common.sh  

#***********************************************************  

# install_jdk  

#   install jdk on machine: /usr/local/lib  

#  

# Parameters:  

#   machine - root@ipaddr  

#   jdkUri  - uri for fetching tarball  

#  

# Example:  

#  

#   install_jdk root@192.168.122.206 ftp://vm-ftp/pub/tarball/jdk-7u67-linux-x64.tar.gz  

#  

#***********************************************************  

. common.sh  

# YOU MIGHT CHANGE BELOW LINE TO GET YOUR JDK TARBALL:  

DEFAULT_JDK_SRC="ftp://vm-ftp/pub/tarball/jdk-7u67-linux-x64.tar.gz"  

# DO NOT CHANGE BELOW TWO LINES:  

INSTALL_DIR="/usr/local/lib/java"  

LOCAL_DIR="./.tmp"  

function install_jdk() {  

    echo -e "<INFO> install jdk on machine: $1"  

    local DEST_LOGIN=$1  

    local JDK_URI=$2  

    local TAR=$(basename $JDK_URI)  

    echo -e "<INFO> jdk: '$JDK_URI'"  

    wget -c $JDK_URI -P $LOCAL_DIR -O $LOCAL_DIR/$TAR  

    $(is_empty_dir "$LOCAL_DIR/jdk_untar")  

    local ret=$?  

    case $ret in  

    $DIR_NOT_EXISTED)  

        mkdir -p $LOCAL_DIR/jdk_untar  

        ;;  

    $DIR_IS_EMPTY)  

        ;;  

    $DIR_NOT_EMPTY)  

        rm -rf $LOCAL_DIR/jdk_untar/*  

        ;;  

    *)  

        exit $ERR_FATAL_ERROR  

        ;;  

    esac  

    # untar to jdk_untar  

    tar -zxf $LOCAL_DIR/$TAR -C $LOCAL_DIR/jdk_untar  

    $(is_empty_dir "$LOCAL_DIR/jdk_untar")  

    local ret=$?  

    if [ "$ret" -eq "$DIR_NOT_EMPTY" ]; then  

        local jdk_home=`ls $LOCAL_DIR/jdk_untar 2>/dev/null`  

        echo $jdk_home  

    else  

        exit $ERR_FATAL_ERROR  

    fi  

    echo -e "<INFO> create folder on: $DEST_LOGIN:$INSTALL_DIR"  

    local ret=`ssh $DEST_LOGIN "mkdir $INSTALL_DIR"`  

    echo -e "<INFO> copy $jdk_home/ to: $DEST_LOGIN:$INSTALL_DIR/"  

    local ret=`scp -r $LOCAL_DIR/jdk_untar/$jdk_home $DEST_LOGIN:$INSTALL_DIR`  

    # remove local tar  

    rm -rf $LOCAL_DIR/jdk_untar  

    local DEST_JAVA_HOME=$INSTALL_DIR/$jdk_home  

    echo -e "<TODO> remove old settings for install_jdk in /etc/profile"  

    echo -e "<INFO> set /etc/profile: JAVA_HOME=$DEST_JAVA_HOME"  

    local ret=`ssh $DEST_LOGIN "echo '' >> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN "echo '#!{{install_jdk@hgdb.net==>' >> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN "echo 'export JAVA_HOME=$DEST_JAVA_HOME' >> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN "echo 'export CLASSPATH=.:\$JAVA_HOME/lib/tools.jar:\$JAVA_HOME/lib/dt.jar' >> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN "echo 'export PATH=\$JAVA_HOME/bin:\$JAVA_HOME/jre/bin:\$PATH' >> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN "echo '#!<==install_jdk@hgdb.net}}'>> /etc/profile"`  

    local ret=`ssh $DEST_LOGIN ". /etc/profile"`  

}  

function uninstall_jdk() {  

    echo -e "<TODO> uninstall jdk from: $1"  

}  

#=======================================================================  

# ---- main() ----  

if [ -n $1 ]; then  

    DEST_IP=$1  

    JDK_SRC=$DEFAULT_JDK_SRC  

    if [ $# == 2 ]; then  

        JDK_SRC=$2  

    fi  

    echo -e "<INFO> install jdk on '$DEST_IP', jdk: '$JDK_SRC'"  

    install_jdk "root@$DEST_IP" "$JDK_SRC"  

fi