linux通过if判断是否压缩文件和文件夹

#!/bin/sh

bakPath="/usr/local/upload_backup/"

echo "bakPath is $bakPath"

filePathName=`date +%Y_%m_%d`

echo "filePathName is $filePathName"

fileName=pics_`date +%Y_%m_%d.tar`

echo "fileNameis $fileName/fileName "

echo " $bakPath$filePathName/$fileName "

sourceDir="/usr/local/upload"

echo "fsourceDir is $sourceDir "

BACKUP_DIR="/usr/local/"

echo "{BACKUP_DIR} is ${BACKUP_DIR} "

if [ ! -d "$bakPath" ]; then

echo "/usr/local/upload_backup"

mkdir "$bakPath"

echo "$bakPath文件夹创建成功"

else

echo "$bakPath文件夹已经存在"

fi

if [ ! -d "$bakPath`date +%Y_%m_%d`" ]; then

echo "/usr/local/upload_backup"

mkdir "$bakPath`date +%Y_%m_%d`"

echo "$filePathName文件夹成功"

else

echo "$filePathName文件夹已经存在"

fi

cd ${BACKUP_DIR}

BAK_FLAG=0

checkRead(){

if [ $MAX_NO -ne 0 -a $MAX_NO -ne 1 ] ; then

actionRead

fi

}

actionRead(){

echo -n "是否备份已上传图片？是请输入1；否请输入0 "

read MAX_NO

checkRead

}

actionRead

if [ $MAX_NO -eq 1 ] ; then

tar -czvPf $bakPath$filePathName/$fileName $sourceDir

fi
http://www.cnblogs.com/qq78292959/archive/2011/07/06/2099427.html  tar指令解释