Original article address:Http://blogread.cn/it/article/743? F = WB
I used Perl to write some monitoring scripts and put them in crontab for scheduling and execution. Sometimes you will find that a script runs for too long and starts multiple instances at the same time. Therefore, it is necessary to add control to the script to run only one instance.
The simplest and most natural idea is to check and create an empty lock
Write some monitoring scripts in Perl and put them in crontab to schedule execution. It is sometimes found that a script runs too long and runs multiple instances at the same time, so it is necessary to control the script and run only one instance.
The simplest natural idea is to check and create an empty lock file in the script and delete it at the end of the script. Determine whether the script is runnin
Copy Code code as follows:
#!/usr/bin/perl
Use File::D irwalk;
Use File::basename;
Use Data::D umper;
Use warnings;
Use strict;
My $dw = new File::D irwalk;
My%files;
Fileparse_set_fstype ("MSWin32");
$DW->onfile (
Sub {
My ($file) = @_;
Push @{$files {base
contents of the standard output stdout default device (Terminal screen) to a string, you need to be careful, because stdout is standard output after all, and many parts of the program may need to use it. Therefore, try to modify the target of the standard output within a small piece of range. For example, surround with curly braces and stdout (the bare-word file handle can only be decorated with local):print "1. This goes to the real standard output\
First, open, close the file
Syntax is open (Filevar, filename), where Filevar is a file handle, or the program used to represent a file code name, filename is filename, its path can be relative path, can also be absolute path.
Open (FILE1, "file1");
Open (FILE1, "/u/jqpublic/file1");
You must decide the access mode when you open the
The module uses a Perl array to represent a file, each row of the file corresponds to an element of the array, the first behavior element 0, the second back is 1, ...The file itself is not actually loaded into memory, and the operation of the array element immediately acts on the f
If (open (myfile, "E: \ Perl \ code \ string. pl ")){Print ("Success open the file \ n ");######################################## ##### Output all of myfile's content 1######################################## ####Print (Print ("=========== 1 ===============\ N ");######################################## ##### Output all of myfile's content 2######################################## ####@ Array = Foreach $ I
File_get_contents: move the file to the server. the Last Post is edited by molaifeng from 2013-12-1217:39:38 nbsp; use the ckeditor editor to copy the image in the word file and check that the source code of the image address is file: in this form, a method is written. when you paste the image, file_get_contents conve
the file you want to create4 if(System.IO.File.Exists (newfilepath))5 {6 //determine if a new file already exists7 Throw NewException ("file already exists")8 }9 TenSystem.IO.File.Create (Newfilepath);//Create One ...... A}3 Copy files, move
"; the file. Close (); + UpdateData (FALSE); - } $}void Cfilecrcdlg::onopen ()Now, we is going to using another-to-open a file and get the CRC check sum.Here is the code:1 voidcfilecrcdlg::ondropfiles (hdrop hdropinfo)2 {3 //todo:add your message handler code here and/or call default4 UINT J,ifilecount;5 CharFile_name[max_path];6 //Variable for CRC7 WORD N;8 WORD i;9BYTE szchar[201];TenBYTE
Address: http://blog.csdn.net/omohe/article/details/1562515
To read a string from a file using Perl, you can use either of the following methods:
1. Read all the content in the file into an array at a time (this method is suitable for small files ):Open (file,"Filename") | Die"Can not open the
Copy Code code as follows:
?
/**
* Manipulating file Classes
*
Example
* Fileutil::createdir (' A/1/2/3 '); Test build folder Build a A/1/2/3 folder
* Fileutil::createfile (' B/1/2/3 '); Test build file Build a 3 file under the b/1/2/folder
* Fileutil::createfile (' b/1/2/3.exe '); Test build file to build
cursor at the beginning of the file, must read first, write Remember: r+ mode. Must be read first. And then write No matter how many you read in the file before, write it back, and add it at the end of the file. 1. Write before the document is done, and write it from the beginning2. If you read something in a document, write it at the end of the do
File_get_contents: move the file to the server. This post was last edited by molaifeng at 17:39:38, January 12 ,.
Use the ckeditor editor to copy the image in the word file and check that the source code of the image address is in the format of file: //. then I wrote a method to register an event during pasting, use a
problem: After uploading the compressed package to the server locally, unzip it in the WDCP file Manager, unzip it, then try to move the file to a different directory, fill in the moving target directory, and then move to show that the move was successful, but the target dir
Perl Clipboard module 'clipedit. pl' insecure temporary File Processing Vulnerability
Release date:Updated on:
Affected Systems:Perl Clipboard 0.13
Description:--------------------------------------------------------------------------------Bugtraq id: 69473Perl is a high-level, general, literal, and dynamic programming language.Clipboard 0.13 has an insecure temporary
#!/usr/bin/perl-w use
strict;
Use File::spec;
Local $\ = "\ n"; #当前模块的每行输出加入换行符 my
%options;
#目录路径
$options {single_case} = '/home/jiangyu/src/pl/example ';
my @cases;
if (-D $options {single_case}) {#判断目录是否存在 my
@files;
my $dh;
Push (@files, $options {single_case});
while (@files) {
if (-D $files [0]) {#若是目录执行以下操作
opendir $dh, $files [0] or Die $!; #打开目录句柄, if failur
Requirements: Take a row in file 1, compare all the data in file 2, save the same, or delete.
Copy Code code as follows:
#!/usr/bin/perl
#use Strict;
Open (FILE1, "c:/perl/bx/bx-users.txt");
Open (FILE2, "c:/perl/bx/bx-book-ratings.txt");
Open (RESULT1, ">c:/
PHP implementation file Upload, encountered move_uploaded_file can not move files, here is a solution to everyone, for your reference.PHP to upload files, and finally to move files with Move_uploaded_file, but it does not work, copy or rename use or normalThe source code to see the file name and PHP configuration in th
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