Sorry grep I had to down vote your node because at worse is just wrong and at best its misleading.

If you are in a modern version of linux it's easy
What does 'modern linux' mean? The basic operation of *nix file permission and ownership mechanisms have been around since before my beard started turning grey.

To delete a file (in a directory you can get to) you must have write permissions for that directory.
Not complete, you must also have write permissions on the file. What if the directory is 777 but he file is 644 and owned by root or file is owned by you and is 444? Try this: 

Prologue
drwxrwxrwx    2 mitd mitd 4096 Jul 26 02:36 testdir
-r--r--r--    1 mitd mitd  0 Jul 26 02:36 testdir/myfile

perl -e 'open(FILE,">myfile") or die $!'

[download]

For a more OS independant solution copy the file (cp -p) to a backup file then delete the original
'OS' dependent true but then you quote a *nix dependent command with no regard to what the ownership permissions conditions might be,

mitd-Made in the Dark
'Interactive! Paper tape is interactive!
If you don't believe me I can show you my paper cut scars!'

In reply to Re: Re: How do I know if I can delete a file/folder? by mitd
in thread How do I know if I can delete a file/folder? by soffen

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.