Editing Linux commands (section)

==== Copy old directory to new directory ====
* {{kbd | key=cp -a ''old_dir new_dir/''}} or {{kbd | key=cp -a ''old_dir/ new_dir/''}} ({{Linux}})<ref>
<pre>from manual:
-a, --archive
              same as -dR --preserve=all
-d     same as --no-dereference --preserve=links
--preserve[=ATTR_LIST]
              preserve the specified attributes (default: mode,ownership,timestamps), if  possible  addi-
              tional attributes: context, links, xattr, all
-R, -r, --recursive
              copy directories recursively</pre></ref><ref>[https://superuser.com/questions/61611/how-to-copy-with-cp-to-include-hidden-files-and-hidden-directories-and-their-con unix - How to copy with cp to include hidden files and hidden directories and their contents? - Super User]</ref>
** If the folder {{kbd | key=new_dir}} exists already, system will create the folder {{kbd | key=old_dir}} and all files and sub folders under {{kbd | key=old_dir}} will copy to the path {{kbd | key=new_dir}}/{{kbd | key=old_dir}}.
** If the folder {{kbd | key=new_dir}} NOT exists, all files and sub folders under {{kbd | key=old_dir}} will copy to the folder {{kbd | key=new_dir}}.
* {{kbd | key=cp -a ''old_dir/* new_dir/''}} ({{Linux}}): All files and sub folders under {{kbd | key=old_dir}} will copy to the folder {{kbd | key=new_dir}}.
*  {{kbd | key=copy /Y ''old_dir new_dir/''}} ({{Win}})<ref> /Y 不顯示覆寫現存目的檔案的確認提示。 (引用自 copy /? 命令說明)</ref>
* make new directory & copy all old files to new directory
** mkdir ''new_dir''
** cp ''old_dir/* new_dir''
* [https://askubuntu.com/questions/91740/how-to-move-all-files-in-current-folder-to-subfolder How to move all files in current folder to subfolder? - Ask Ubuntu]