hello
i have a requirement where i have a direcotry in which i get files in the format
STOCKS.20080114.dat
STOCKS.20080115.dat
STOCKS.20080117.dat
STOCKS.20080118.dat
i need to loop through the directory and sort by create date descending order and i need to process the first file.
... (1 Reply)
Hi,
I need to sort all the files in a directory whilst retaining the originals. So if in the directory I have:
File1
File2
File3
I want to sort these files so that I would have:
File1
File1.sort
File2
File2.sort
File3
File3.sort
where I have added the .sort extension to show... (4 Replies)
Hi all.
I have 2 files like this:
f1
A 10
B 80
C 9
f2
A 11
B 700
C 10
What I want is the concatenation of the two files sorted by name (alphabetically) and size (numerically), so the result should be like this:
F3 (cat f1 f2 sorted)
A 10
A 11
B 80
B 700 (2 Replies)
hi there,
I have a directory which contents I can parse dynamically. I end up with a file list. I then want to display those files sorted by date, oldest files first. I have very very little PERL experience...Would anyone know how to do that ? Thanks in advance. (8 Replies)
I got a long list of file name.
My input:
data_1.txt
data_2.txt
data_3.txt
data_10.txt
data_21.txt
data_12.txt
data_4.txt
My desired output:
data_1.txt
data_2.txt
data_3.txt
data_4.txt
data_10.txt
data_12.txt
data_21.txt
Does anybody got idea how to archive it? (11 Replies)
Hi,
A basic query. In the example file below, I want to sort by column 1 and then by column 2 numerically. I have tried sort -k2n,1 file1 but while this sorts the columns in the correct order, it does not sort column 2 numerically. Any help would be much appreciated. Also, if you have time to... (3 Replies)
Greetings - I'm not necessarily new to bash scripting - I'm probably between beginner and intermediate, but I have something that I just cannot figure out after many attempts to find it. I have a file that is merely a list of many files, with their respective paths, and a branch path (ClearCase)... (5 Replies)
Hey Guys,
I am facing an annoying scenario, fewer times when I execute the sort command, it throws out on error saying that "No Space on available on /var/tmp/<temp file name>. May be it is set to /var/tmp directory. I was wondering, if I cant redirect the temporary file creation to any other... (3 Replies)
Hello all,
I have a list of file names in a text document where each file name consists of 4 letters and 3 numbers (for example MACR119). There are 48 file names in the document (they are not in alphabetical or numerical order). I would like to reorder the list of names so that the 48th name is... (3 Replies)
Discussion started by: MDeBiasse
3 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)