Linux 编写shell脚本

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#!/bin/bash
echo Hello `whoami`
TIME=`date | awk '{print $5}'| cut -d ":" -f 1`
if [ $TIME -gt 6 ] && [ $TIME -lt 12 ]
then echo Good Morning
elif [ $TIME -gt 12 ] && [ $TIME -lt 18 ]
then echo Good Afternoon
else echo Good Night
fi
#######################
你可以通过改变时间来改变提示语言
#!/bin/bash
read -p "please enter a number:" num
for ((i=1; i<=$num; i++))
do
for ((j=1; j<=$i; j++))
do
echo -e "*\c"
done
echo -e "\n\c"
done
#######################

脚本一
#!/bin/sh
echo Hello `whoami`
CurrTime=`date +"%H"`
if [ ${CurrTime} -lt 12 ]; then
echo Good Morning
exit 0
fi
if [ ${CurrTime} -lt 6 ]; then
echo Good Afternoon
exit 0
fi
if [ ${CurrTime} -lt 24 ]; then
echo Good Night
exit 0
fi

扩展阅读：linux shell脚本编写教程 ... shell常用的20个命令 ... 编写一个简单的脚本 ... 简单的shell脚本代码 ... 100个必会的shell脚本 ... shell脚本基本命令 ... sh脚本文件的编写 ... shell脚本菜鸟教程 ... linux创建shell脚本并编辑 ...

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Linux 编写shell脚本