linux cp指令报错：cp: -r not specified； cp: omitting directory ‘xxx‘（需要加-r递归拷贝）

如图，复制文件夹的时候报错

原因：被拷贝文件夹里还有文件夹

解决方法，加-r递归拷贝

cp demo/ workspace/ -r

帮助文档

root@2512db9ef25a:/heop/workspace/demo/base# cp --h
Usage: cp [OPTION]... [-T] SOURCE DESTor:  cp [OPTION]... SOURCE... DIRECTORYor:  cp [OPTION]... -t DIRECTORY SOURCE...
Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.Mandatory arguments to long options are mandatory for short options too.-a, --archive                same as -dR --preserve=all--attributes-only        don't copy the file data, just the attributes--backup[=CONTROL]       make a backup of each existing destination file-b                           like --backup but does not accept an argument--copy-contents          copy contents of special files when recursive-d                           same as --no-dereference --preserve=links-f, --force                  if an existing destination file cannot beopened, remove it and try again (this optionis ignored when the -n option is also used)-i, --interactive            prompt before overwrite (overrides a previous -noption)-H                           follow command-line symbolic links in SOURCE-l, --link                   hard link files instead of copying-L, --dereference            always follow symbolic links in SOURCE-n, --no-clobber             do not overwrite an existing file (overridesa previous -i option)-P, --no-dereference         never follow symbolic links in SOURCE-p                           same as --preserve=mode,ownership,timestamps--preserve[=ATTR_LIST]   preserve the specified attributes (default:mode,ownership,timestamps), if possibleadditional attributes: context, links, xattr,all--no-preserve=ATTR_LIST  don't preserve the specified attributes--parents                use full source file name under DIRECTORY-R, -r, --recursive          copy directories recursively--reflink[=WHEN]         control clone/CoW copies. See below--remove-destination     remove each existing destination file beforeattempting to open it (contrast with --force)--sparse=WHEN            control creation of sparse files. See below--strip-trailing-slashes  remove any trailing slashes from each SOURCEargument-s, --symbolic-link          make symbolic links instead of copying-S, --suffix=SUFFIX          override the usual backup suffix-t, --target-directory=DIRECTORY  copy all SOURCE arguments into DIRECTORY-T, --no-target-directory    treat DEST as a normal file-u, --update                 copy only when the SOURCE file is newerthan the destination file or when thedestination file is missing-v, --verbose                explain what is being done-x, --one-file-system        stay on this file system-Z                           set SELinux security context of destinationfile to default type--context[=CTX]          like -Z, or if CTX is specified then set theSELinux or SMACK security context to CTX--help     display this help and exit--version  output version information and exitBy default, sparse SOURCE files are detected by a crude heuristic and the
corresponding DEST file is made sparse as well.  That is the behavior
selected by --sparse=auto.  Specify --sparse=always to create a sparse DEST
file whenever the SOURCE file contains a long enough sequence of zero bytes.
Use --sparse=never to inhibit creation of sparse files.When --reflink[=always] is specified, perform a lightweight copy, where the
data blocks are copied only when modified.  If this is not possible the copy
fails, or if --reflink=auto is specified, fall back to a standard copy.The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.
The version control method may be selected via the --backup option or through
the VERSION_CONTROL environment variable.  Here are the values:none, off       never make backups (even if --backup is given)numbered, t     make numbered backupsexisting, nil   numbered if numbered backups exist, simple otherwisesimple, never   always make simple backupsAs a special case, cp makes a backup of SOURCE when the force and backup
options are given and SOURCE and DEST are the same name for an existing,
regular file.GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report cp translation bugs to <http://translationproject.org/team/>
Full documentation at: <http://www.gnu.org/software/coreutils/cp>
or available locally via: info '(coreutils) cp invocation'
root@2512db9ef25a:/heop/workspace/demo/base#

参考文章：Linux中使用cp命令报cp:omitting directory错误

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linux cp指令报错：cp: -r not specified； cp: omitting directory ‘xxx‘（需要加-r递归拷贝）

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