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Full Discussion: Undeletable file
Operating Systems OS X (Apple) Undeletable file Post 303036996 by hicksd8 on Saturday 20th of July 2019 05:07:36 AM
Old 07-20-2019
@MadeInGermany............Your synopsis of the filesystem structure is, of course, absolutely correct. The filename is in the directory inode but in my experience, if you nuke the file inode when fsck comes along it will see that the directory entry points to a now non-existant inode and ask approval to remove the file. But yes, if fsck falls over at that point because the filename is illegal or doesn't clear the file entry, then you are right that the directory inode would need to be identified and zapped in the same way too (which is possible because the file in question is the only entry in the directory). fsck can then be run again to clear up the mess. I've done this many many times when working on filesystem internals, the problem these days is that many OS's do not provide or implement clri.

I take your point that unlink directory is an easier approach if it works so let the OP try that first.

NOTE: In this case for fsck read the MacOS fsck_hfs.

Last edited by hicksd8; 07-20-2019 at 06:34 AM..
 

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CTYPE_GRAPH(3)								 1							    CTYPE_GRAPH(3)

ctype_graph - Check for any printable character(s) except space

SYNOPSIS
bool ctype_graph (string $text) DESCRIPTION
Checks if all of the characters in the provided string, $text, creates visible output. PARAMETERS
o $text - The tested string. RETURN VALUES
Returns TRUE if every character in $text is printable and actually creates visible output (no white space), FALSE otherwise. EXAMPLES
Example #1 A ctype_graph(3) example <?php $strings = array('string1' => "asdf ", 'string2' => 'arf12', 'string3' => 'LKA#@%.54'); foreach ($strings as $name => $testcase) { if (ctype_graph($testcase)) { echo "The string '$name' consists of all (visibly) printable characters. "; } else { echo "The string '$name' does not consist of all (visibly) printable characters. "; } } ?> The above example will output: The string 'string1' does not consist of all (visibly) printable characters. The string 'string2' consists of all (visibly) printable characters. The string 'string3' consists of all (visibly) printable characters. NOTES
Note If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative val- ues have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string contain- ing the decimal digits of the integer. SEE ALSO
ctype_alnum(3), ctype_print(3), ctype_punct(3). PHP Documentation Group CTYPE_GRAPH(3)
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