#!/bin/sh
apkName=CTestV5_5.5.5.0_7_ycmob2.apk
lastName=${apkName##*_}
headName=${apkName%_*}
firstName=${headName%_*}
echo "firstName is ${firstName}"
apkName=${firstName}"_"${lastName}
echo "apkName1 is ${apkName}"
apkName="${firstName}_${lastName}"
echo "apkName2 is ${apkName}"
apkName="${firstName}haha_${lastName}"
echo "apkName3 is ${apkName}"
结果: