12-13-2008
What it has to do is, after comparing the files, state, or echo I suppose would be the right term, which ones differed.
Ex.: After comparing lab2.txt w/ lab2answer.txt, it finds that my results for cmd/question 3 differ from the results given in the answer key (provided by the professor). I need it to echo/state/report that "Lab 2, Question 3 differ."
Does that make sense?
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suppose one file
P1168S
P2150L
P85L
Q597R
R1097C
Another file
P2150L
P85L
Q597R
R1097C
R1379C
R1587K
Then output shud be
R1379C
R1587K
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Hi,
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89 /usr
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36 /tmp
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ABCD 4322 26485
JMTJ 5311 97248
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Hi there,
I'm sure this question has been asked many times but I can't find any posts with information.
How can I check the differences between say lines 20 - 200 in file1 and lines 420 - 600 in file2?
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It seems like a common task, but I haven't been able to find the solution.
vitallog.txt
1310,John,Hancock
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122,Jane,Doe
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1500,Micheal,May
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12122,Jane,Thomas
122,Janes,Does
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124152970
123899868
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LEARN ABOUT PHP
fileatime
FILEATIME(3) 1 FILEATIME(3)
fileatime - Gets last access time of file
SYNOPSIS
int fileatime (string $filename)
DESCRIPTION
Gets the last access time of the given file.
PARAMETERS
o $filename
- Path to the file.
RETURN VALUES
Returns the time the file was last accessed, or FALSE on failure. The time is returned as a Unix timestamp.
EXAMPLES
Example #1
fileatime(3) example
<?php
// outputs e.g. somefile.txt was last accessed: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last accessed: " . date("F d Y H:i:s.", fileatime($filename));
}
?>
ERRORS
/EXCEPTIONS
Upon failure, an E_WARNING is emitted.
NOTES
Note
The atime of a file is supposed to change whenever the data blocks of a file are being read. This can be costly performance-wise
when an application regularly accesses a very large number of files or directories.
Some Unix filesystems can be mounted with atime updates disabled to increase the performance of such applications; USENET news
spools are a common example. On such filesystems this function will be useless.
Note
Note that time resolution may differ from one file system to another.
Note
The results of this function are cached. See clearstatcache(3) for more details.
Tip
As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
which wrappers support stat(3) family of functionality.
SEE ALSO
filemtime(3), fileinode(3), date(3).
PHP Documentation Group FILEATIME(3)