写一个获取文件的sell脚本

Question

如何用shell脚本指定一个时间，然后从指定的目录(包括其子目录)中获取该时间点之后的文件复制到另一目录中

Answer 1

执行命令
backup.sh /var/www/html /opt/backup 20220609

backup.sh文件如下

#!/bin/sh
 
show_usage() {
    echo "Usage: backup.sh src_folder bak_folder bak_date"
    echo ""
    echo "src_folder - source folder to backup"
    echo "bak_folder - backup folder"
    echo "bak_date   - backup date in YYYYMMDD format"
}
 
 
if [ $# -ne 3 ]; then
    show_usage
    exit 1
fi
 
src_folder="$1"
bak_folder="$2"
bak_date="$3"
 
bak_file="$bak_folder/backup.tar"
if [ -f $bak_file ]; then
    rm $bak_file
fi
 
tmpfile="`mktemp`"
touch -t ${bak_date}0000 $tmpfile
cd $src_folder
find . -name "*.py" -newer $tmpfile -exec tar rvf $bak_file {} \;
rm $tmpfile
 
echo "backup file: $bak_file"
ls -l $bak_file