环境变量和别名

export PATH=/Users/luokaiwen/Library/Android/sdk/platform-tools/:PATH export JAVA_6_HOME=/Library/Java/JavaVirtualMachines/1.6.0_65-b14-462.jdk/Contents/Home export JAVA_7_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home export JAVA_HOME=JAVA_8_HOME export ANDROID_HOME=~/Library/Android/sdk

export PATH=/usr/local/php5-5.6.30-20170213-115230/bin:$PATH; alias tc_start='/Users/luokaiwen/Server/tomcat-9.0.0.M21/bin/startup.sh' alias tc_stop='/Users/luokaiwen/Server/tomcat-9.0.0.M21/bin/shutdown.sh' 改变文件的修改时间

touch -t 201112310101 /Volumes/MacHD/Pictures/somefile.jpg