shell脚本 回顾 小练习

#!/bin/bash
dir=/hanzhao
files=`find /hanzhao/ -name ‘*.sh‘`
for file in $files
do
# echo $file
 filename=${file%.*}
# echo $filename
 mv $file ${filename}.shell
done

#!/bin/bash
    file=`ls /[ABC]/A[123]`
    for i in $file        
        do
        num=${i##*A}
        let num1=num+3 
       # echo $num1
       # num2=${i%A*} 
       # echo $num2 
        mv $i ${i%A*}A$num1
    done

直接用vi打开文件，之后再读模式下 直接输入 ：%s#aa#bb#g

#!/bin/bash
cp /opt/lampp/logs/access_log /opt/bak_access_log-`date +%Y%m%d%H%M`
>/opt/lampp/logs/access_log

#!/bin/bash
start=0
pidnum=`ps aux|grep "/opt/lampp/*"|wc -l`
echo ${pidnum}
if [ ${pidnum} -gt 1 ]
then 
echo ‘lampp is start‘
read -p ‘Do you wish to stop lampp? y or n:  ‘ yn
case $yn in
[Yy]* )start=1;;
[Nn]* )exit;;
 * )echo ‘Please answer Y or N‘
exit;;
esac
else
echo ‘lampp is stop,doing start‘
read -p ‘Do you wish to start lampp? y or n:  ‘ yn
case $yn in
[Yy]* )start=0;;
[Nn]* )exit;;
 * )echo ‘Please answer Y or N‘
exit;;
esac
fi

if [ ${start} -eq 1 ]
then ps aux|grep "/opt/lampp/*"|grep -v "grep"|awk ‘{print $2}‘|xargs kill -9
echo ‘lampp is stop‘
else 
/opt/lampp/lampp start
echo ‘lampp is start‘
fi