10 2022 档案
摘要：export JAVA_HOME=/usr/local/java/jdk1.8.0_171 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
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摘要：#!/bin/bash function timediff() { # time format:date +"%s.%N", such as 1502758855.907197692 start_time=$1 end_time=$2 start_s=${start_time%.*} start_n
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