英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:



安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • What is the difference between rm -r and rm -f? - Super User
    rm example $ rm example rm: cannot remove `example': Is a directory As you can see, rm does not remove directories by default rm example -f $ rm example -f rm: cannot remove `example': Is a directory Using the -f flag still doesn't allow it to remove directories rm example -r
  • What does rm -R do? - Super User
    First, googling for things like "-R", is useless All kinds of unrelated answers come out I know what rm -rf does, but what does rm -R does? (specially rm -R <directory>) (I actually found one match but is says "it is the raw eggs option" which is an enigma to understand)
  • How do I make rm not give an error if a file doesnt exist?
    $ touch myfile $ chmod 400 myfile $ rm myfile rm: remove write-protected regular empty file `myfile'? So rm will warn you if you try to delete a file you don't have write permissions on This is allowed if you have write permissions on the directory but is a little weird, which is why rm normally warns you about it
  • linux - Argument list too long error for `rm -rf - Super User
    Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
  • What does rm -rf do? - Super User
    The rm command removes files The -r option will perform a recursive removal and the -f option will remove files without prompting you to confirm that you wish to have them removed, even if you would otherwise be prompted as to whether you wish to remove them due to the files permissions
  • Is there a scenario where rm -rf --no-preserve-root is needed?
    Anyway, this is a relatively new restriction, it was added in the 7th version of the POSIX specification (the previous one is here), before that rm -rf was a perfectly valid command On a historical note, the and directories have always been protected from rm, ever since 1979, when rm first acquired
  • find: -exec rm {} \; vs. -delete - why is the former widely . . .
    The reason is -delete doesn't spawn a new process, while -exec rm {} \; invokes a separate rm for each matched file If you cannot use -delete then your next thought should be -exec rm {} + that can remove multiple files with a single rm (still it will invoke rm more than once if needed) Why isn't -exec … + widely recommended then? It might
  • Will rm -rf * remove all files folders in the current directory?
    When you have file names start with a dash (-), these file names could be mistakenly interpreted as options by the programs, such as rm(1) In this case, for example, if you have a file named -f in working directory, this file won't be removed by rm -rf * , as it will be treated as another -f option by rm(1) ; or having a file named -i would
  • unix - Why does \rm work but rm doesnt? - Super User
    Someone, either your system administrator or your linux distribution (you didn't specify what form of unix you are using) has aliased rm to rm -i Take a look at what man rm says: -i Request confirmation before attempting to remove each file, regardless of the file's permissions, or whether or not the standard input device is a terminal





中文字典-英文字典  2005-2009